diff --git a/fulfillment-service/internal/api/osac/private/v1/event_type.pb.go b/fulfillment-service/internal/api/osac/private/v1/event_type.pb.go
index 776491558..e7479c382 100644
--- a/fulfillment-service/internal/api/osac/private/v1/event_type.pb.go
+++ b/fulfillment-service/internal/api/osac/private/v1/event_type.pb.go
@@ -140,6 +140,7 @@ type Event struct {
 	//	*Event_ClusterVersion
 	//	*Event_StorageTier
 	//	*Event_Secret
+	//	*Event_Volume
 	Payload       isEvent_Payload `protobuf_oneof:"payload"`
 	unknownFields protoimpl.UnknownFields
 	sizeCache     protoimpl.SizeCache
@@ -470,6 +471,15 @@ func (x *Event) GetSecret() *Secret {
 	return nil
 }
 
+func (x *Event) GetVolume() *Volume {
+	if x != nil {
+		if x, ok := x.Payload.(*Event_Volume); ok {
+			return x.Volume
+		}
+	}
+	return nil
+}
+
 func (x *Event) SetId(v string) {
 	x.Id = v
 }
@@ -726,6 +736,14 @@ func (x *Event) SetSecret(v *Secret) {
 	x.Payload = &Event_Secret{v}
 }
 
+func (x *Event) SetVolume(v *Volume) {
+	if v == nil {
+		x.Payload = nil
+		return
+	}
+	x.Payload = &Event_Volume{v}
+}
+
 func (x *Event) HasPayload() bool {
 	if x == nil {
 		return false
@@ -981,6 +999,14 @@ func (x *Event) HasSecret() bool {
 	return ok
 }
 
+func (x *Event) HasVolume() bool {
+	if x == nil {
+		return false
+	}
+	_, ok := x.Payload.(*Event_Volume)
+	return ok
+}
+
 func (x *Event) ClearPayload() {
 	x.Payload = nil
 }
@@ -1171,6 +1197,12 @@ func (x *Event) ClearSecret() {
 	}
 }
 
+func (x *Event) ClearVolume() {
+	if _, ok := x.Payload.(*Event_Volume); ok {
+		x.Payload = nil
+	}
+}
+
 const Event_Payload_not_set_case case_Event_Payload = 0
 const Event_Cluster_case case_Event_Payload = 3
 const Event_ClusterTemplate_case case_Event_Payload = 4
@@ -1203,6 +1235,7 @@ const Event_NatGateway_case case_Event_Payload = 37
 const Event_ClusterVersion_case case_Event_Payload = 38
 const Event_StorageTier_case case_Event_Payload = 39
 const Event_Secret_case case_Event_Payload = 40
+const Event_Volume_case case_Event_Payload = 41
 
 func (x *Event) WhichPayload() case_Event_Payload {
 	if x == nil {
@@ -1271,6 +1304,8 @@ func (x *Event) WhichPayload() case_Event_Payload {
 		return Event_StorageTier_case
 	case *Event_Secret:
 		return Event_Secret_case
+	case *Event_Volume:
+		return Event_Volume_case
 	default:
 		return Event_Payload_not_set_case
 	}
@@ -1317,6 +1352,7 @@ type Event_builder struct {
 	ClusterVersion               *ClusterVersion
 	StorageTier                  *StorageTier
 	Secret                       *Secret
+	Volume                       *Volume
 	// -- end of Payload
 }
 
@@ -1419,6 +1455,9 @@ func (b0 Event_builder) Build() *Event {
 	if b.Secret != nil {
 		x.Payload = &Event_Secret{b.Secret}
 	}
+	if b.Volume != nil {
+		x.Payload = &Event_Volume{b.Volume}
+	}
 	return m0
 }
 
@@ -1560,6 +1599,10 @@ type Event_Secret struct {
 	Secret *Secret `protobuf:"bytes,40,opt,name=secret,proto3,oneof"`
 }
 
+type Event_Volume struct {
+	Volume *Volume `protobuf:"bytes,41,opt,name=volume,proto3,oneof"`
+}
+
 func (*Event_Cluster) isEvent_Payload() {}
 
 func (*Event_ClusterTemplate) isEvent_Payload() {}
@@ -1622,6 +1665,8 @@ func (*Event_StorageTier) isEvent_Payload() {}
 
 func (*Event_Secret) isEvent_Payload() {}
 
+func (*Event_Volume) isEvent_Payload() {}
+
 var File_osac_private_v1_event_type_proto protoreflect.FileDescriptor
 
 var file_osac_private_v1_event_type_proto_rawDesc = string([]byte{
@@ -1711,181 +1756,187 @@ var file_osac_private_v1_event_type_proto_rawDesc = string([]byte{
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+	0x74, 0x6f, 0x33,
 })
 
 var file_osac_private_v1_event_type_proto_enumTypes = make([]protoimpl.EnumInfo, 1)
@@ -1924,6 +1975,7 @@ var file_osac_private_v1_event_type_proto_goTypes = []any{
 	(*ClusterVersion)(nil),               // 30: osac.private.v1.ClusterVersion
 	(*StorageTier)(nil),                  // 31: osac.private.v1.StorageTier
 	(*Secret)(nil),                       // 32: osac.private.v1.Secret
+	(*Volume)(nil),                       // 33: osac.private.v1.Volume
 }
 var file_osac_private_v1_event_type_proto_depIdxs = []int32{
 	0,  // 0: osac.private.v1.Event.type:type_name -> osac.private.v1.EventType
@@ -1958,11 +2010,12 @@ var file_osac_private_v1_event_type_proto_depIdxs = []int32{
 	30, // 29: osac.private.v1.Event.cluster_version:type_name -> osac.private.v1.ClusterVersion
 	31, // 30: osac.private.v1.Event.storage_tier:type_name -> osac.private.v1.StorageTier
 	32, // 31: osac.private.v1.Event.secret:type_name -> osac.private.v1.Secret
-	32, // [32:32] is the sub-list for method output_type
-	32, // [32:32] is the sub-list for method input_type
-	32, // [32:32] is the sub-list for extension type_name
-	32, // [32:32] is the sub-list for extension extendee
-	0,  // [0:32] is the sub-list for field type_name
+	33, // 32: osac.private.v1.Event.volume:type_name -> osac.private.v1.Volume
+	33, // [33:33] is the sub-list for method output_type
+	33, // [33:33] is the sub-list for method input_type
+	33, // [33:33] is the sub-list for extension type_name
+	33, // [33:33] is the sub-list for extension extendee
+	0,  // [0:33] is the sub-list for field type_name
 }
 
 func init() { file_osac_private_v1_event_type_proto_init() }
@@ -2001,6 +2054,7 @@ func file_osac_private_v1_event_type_proto_init() {
 	file_osac_private_v1_subnet_type_proto_init()
 	file_osac_private_v1_user_type_proto_init()
 	file_osac_private_v1_virtual_network_type_proto_init()
+	file_osac_private_v1_volume_type_proto_init()
 	file_osac_private_v1_event_type_proto_msgTypes[0].OneofWrappers = []any{
 		(*Event_Cluster)(nil),
 		(*Event_ClusterTemplate)(nil),
@@ -2033,6 +2087,7 @@ func file_osac_private_v1_event_type_proto_init() {
 		(*Event_ClusterVersion)(nil),
 		(*Event_StorageTier)(nil),
 		(*Event_Secret)(nil),
+		(*Event_Volume)(nil),
 	}
 	type x struct{}
 	out := protoimpl.TypeBuilder{
diff --git a/fulfillment-service/internal/api/osac/private/v1/event_type_protoopaque.pb.go b/fulfillment-service/internal/api/osac/private/v1/event_type_protoopaque.pb.go
index 7efdf9429..2f6628843 100644
--- a/fulfillment-service/internal/api/osac/private/v1/event_type_protoopaque.pb.go
+++ b/fulfillment-service/internal/api/osac/private/v1/event_type_protoopaque.pb.go
@@ -426,6 +426,15 @@ func (x *Event) GetSecret() *Secret {
 	return nil
 }
 
+func (x *Event) GetVolume() *Volume {
+	if x != nil {
+		if x, ok := x.xxx_hidden_Payload.(*event_Volume); ok {
+			return x.Volume
+		}
+	}
+	return nil
+}
+
 func (x *Event) SetId(v string) {
 	x.xxx_hidden_Id = v
 }
@@ -682,6 +691,14 @@ func (x *Event) SetSecret(v *Secret) {
 	x.xxx_hidden_Payload = &event_Secret{v}
 }
 
+func (x *Event) SetVolume(v *Volume) {
+	if v == nil {
+		x.xxx_hidden_Payload = nil
+		return
+	}
+	x.xxx_hidden_Payload = &event_Volume{v}
+}
+
 func (x *Event) HasPayload() bool {
 	if x == nil {
 		return false
@@ -937,6 +954,14 @@ func (x *Event) HasSecret() bool {
 	return ok
 }
 
+func (x *Event) HasVolume() bool {
+	if x == nil {
+		return false
+	}
+	_, ok := x.xxx_hidden_Payload.(*event_Volume)
+	return ok
+}
+
 func (x *Event) ClearPayload() {
 	x.xxx_hidden_Payload = nil
 }
@@ -1127,6 +1152,12 @@ func (x *Event) ClearSecret() {
 	}
 }
 
+func (x *Event) ClearVolume() {
+	if _, ok := x.xxx_hidden_Payload.(*event_Volume); ok {
+		x.xxx_hidden_Payload = nil
+	}
+}
+
 const Event_Payload_not_set_case case_Event_Payload = 0
 const Event_Cluster_case case_Event_Payload = 3
 const Event_ClusterTemplate_case case_Event_Payload = 4
@@ -1159,6 +1190,7 @@ const Event_NatGateway_case case_Event_Payload = 37
 const Event_ClusterVersion_case case_Event_Payload = 38
 const Event_StorageTier_case case_Event_Payload = 39
 const Event_Secret_case case_Event_Payload = 40
+const Event_Volume_case case_Event_Payload = 41
 
 func (x *Event) WhichPayload() case_Event_Payload {
 	if x == nil {
@@ -1227,6 +1259,8 @@ func (x *Event) WhichPayload() case_Event_Payload {
 		return Event_StorageTier_case
 	case *event_Secret:
 		return Event_Secret_case
+	case *event_Volume:
+		return Event_Volume_case
 	default:
 		return Event_Payload_not_set_case
 	}
@@ -1273,6 +1307,7 @@ type Event_builder struct {
 	ClusterVersion               *ClusterVersion
 	StorageTier                  *StorageTier
 	Secret                       *Secret
+	Volume                       *Volume
 	// -- end of xxx_hidden_Payload
 }
 
@@ -1375,6 +1410,9 @@ func (b0 Event_builder) Build() *Event {
 	if b.Secret != nil {
 		x.xxx_hidden_Payload = &event_Secret{b.Secret}
 	}
+	if b.Volume != nil {
+		x.xxx_hidden_Payload = &event_Volume{b.Volume}
+	}
 	return m0
 }
 
@@ -1516,6 +1554,10 @@ type event_Secret struct {
 	Secret *Secret `protobuf:"bytes,40,opt,name=secret,proto3,oneof"`
 }
 
+type event_Volume struct {
+	Volume *Volume `protobuf:"bytes,41,opt,name=volume,proto3,oneof"`
+}
+
 func (*event_Cluster) isEvent_Payload() {}
 
 func (*event_ClusterTemplate) isEvent_Payload() {}
@@ -1578,6 +1620,8 @@ func (*event_StorageTier) isEvent_Payload() {}
 
 func (*event_Secret) isEvent_Payload() {}
 
+func (*event_Volume) isEvent_Payload() {}
+
 var File_osac_private_v1_event_type_proto protoreflect.FileDescriptor
 
 var file_osac_private_v1_event_type_proto_rawDesc = string([]byte{
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+	0x74, 0x6f, 0x33,
 })
 
 var file_osac_private_v1_event_type_proto_enumTypes = make([]protoimpl.EnumInfo, 1)
@@ -1880,6 +1930,7 @@ var file_osac_private_v1_event_type_proto_goTypes = []any{
 	(*ClusterVersion)(nil),               // 30: osac.private.v1.ClusterVersion
 	(*StorageTier)(nil),                  // 31: osac.private.v1.StorageTier
 	(*Secret)(nil),                       // 32: osac.private.v1.Secret
+	(*Volume)(nil),                       // 33: osac.private.v1.Volume
 }
 var file_osac_private_v1_event_type_proto_depIdxs = []int32{
 	0,  // 0: osac.private.v1.Event.type:type_name -> osac.private.v1.EventType
@@ -1914,11 +1965,12 @@ var file_osac_private_v1_event_type_proto_depIdxs = []int32{
 	30, // 29: osac.private.v1.Event.cluster_version:type_name -> osac.private.v1.ClusterVersion
 	31, // 30: osac.private.v1.Event.storage_tier:type_name -> osac.private.v1.StorageTier
 	32, // 31: osac.private.v1.Event.secret:type_name -> osac.private.v1.Secret
-	32, // [32:32] is the sub-list for method output_type
-	32, // [32:32] is the sub-list for method input_type
-	32, // [32:32] is the sub-list for extension type_name
-	32, // [32:32] is the sub-list for extension extendee
-	0,  // [0:32] is the sub-list for field type_name
+	33, // 32: osac.private.v1.Event.volume:type_name -> osac.private.v1.Volume
+	33, // [33:33] is the sub-list for method output_type
+	33, // [33:33] is the sub-list for method input_type
+	33, // [33:33] is the sub-list for extension type_name
+	33, // [33:33] is the sub-list for extension extendee
+	0,  // [0:33] is the sub-list for field type_name
 }
 
 func init() { file_osac_private_v1_event_type_proto_init() }
@@ -1957,6 +2009,7 @@ func file_osac_private_v1_event_type_proto_init() {
 	file_osac_private_v1_subnet_type_proto_init()
 	file_osac_private_v1_user_type_proto_init()
 	file_osac_private_v1_virtual_network_type_proto_init()
+	file_osac_private_v1_volume_type_proto_init()
 	file_osac_private_v1_event_type_proto_msgTypes[0].OneofWrappers = []any{
 		(*event_Cluster)(nil),
 		(*event_ClusterTemplate)(nil),
@@ -1989,6 +2042,7 @@ func file_osac_private_v1_event_type_proto_init() {
 		(*event_ClusterVersion)(nil),
 		(*event_StorageTier)(nil),
 		(*event_Secret)(nil),
+		(*event_Volume)(nil),
 	}
 	type x struct{}
 	out := protoimpl.TypeBuilder{
diff --git a/fulfillment-service/internal/api/osac/private/v1/storage_common_type.pb.go b/fulfillment-service/internal/api/osac/private/v1/storage_common_type.pb.go
new file mode 100644
index 000000000..0f6e6ed97
--- /dev/null
+++ b/fulfillment-service/internal/api/osac/private/v1/storage_common_type.pb.go
@@ -0,0 +1,151 @@
+//
+// Copyright (c) 2026 Red Hat, Inc.
+//
+// Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with
+// the License. You may obtain a copy of the License at
+//
+//   http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on
+// an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the
+// specific language governing permissions and limitations under the License.
+//
+
+// Code generated by protoc-gen-go. DO NOT EDIT.
+// versions:
+// 	protoc-gen-go v1.36.5
+// 	protoc        (unknown)
+// source: osac/private/v1/storage_common_type.proto
+
+//go:build !protoopaque
+
+package privatev1
+
+import (
+	protoreflect "google.golang.org/protobuf/reflect/protoreflect"
+	protoimpl "google.golang.org/protobuf/runtime/protoimpl"
+	reflect "reflect"
+	unsafe "unsafe"
+)
+
+const (
+	// Verify that this generated code is sufficiently up-to-date.
+	_ = protoimpl.EnforceVersion(20 - protoimpl.MinVersion)
+	// Verify that runtime/protoimpl is sufficiently up-to-date.
+	_ = protoimpl.EnforceVersion(protoimpl.MaxVersion - 20)
+)
+
+// Identifies the storage protocol used by storage backends and volumes.
+type StorageProtocol int32
+
+const (
+	// Protocol is unknown or has not been specified.
+	StorageProtocol_STORAGE_PROTOCOL_UNSPECIFIED StorageProtocol = 0
+	// NFS (Network File System) protocol for file-based storage access.
+	StorageProtocol_STORAGE_PROTOCOL_NFS StorageProtocol = 1
+	// Block storage protocol for volume-based storage access.
+	StorageProtocol_STORAGE_PROTOCOL_BLOCK StorageProtocol = 2
+)
+
+// Enum value maps for StorageProtocol.
+var (
+	StorageProtocol_name = map[int32]string{
+		0: "STORAGE_PROTOCOL_UNSPECIFIED",
+		1: "STORAGE_PROTOCOL_NFS",
+		2: "STORAGE_PROTOCOL_BLOCK",
+	}
+	StorageProtocol_value = map[string]int32{
+		"STORAGE_PROTOCOL_UNSPECIFIED": 0,
+		"STORAGE_PROTOCOL_NFS":         1,
+		"STORAGE_PROTOCOL_BLOCK":       2,
+	}
+)
+
+func (x StorageProtocol) Enum() *StorageProtocol {
+	p := new(StorageProtocol)
+	*p = x
+	return p
+}
+
+func (x StorageProtocol) String() string {
+	return protoimpl.X.EnumStringOf(x.Descriptor(), protoreflect.EnumNumber(x))
+}
+
+func (StorageProtocol) Descriptor() protoreflect.EnumDescriptor {
+	return file_osac_private_v1_storage_common_type_proto_enumTypes[0].Descriptor()
+}
+
+func (StorageProtocol) Type() protoreflect.EnumType {
+	return &file_osac_private_v1_storage_common_type_proto_enumTypes[0]
+}
+
+func (x StorageProtocol) Number() protoreflect.EnumNumber {
+	return protoreflect.EnumNumber(x)
+}
+
+var File_osac_private_v1_storage_common_type_proto protoreflect.FileDescriptor
+
+var file_osac_private_v1_storage_common_type_proto_rawDesc = string([]byte{
+	0x0a, 0x29, 0x6f, 0x73, 0x61, 0x63, 0x2f, 0x70, 0x72, 0x69, 0x76, 0x61, 0x74, 0x65, 0x2f, 0x76,
+	0x31, 0x2f, 0x73, 0x74, 0x6f, 0x72, 0x61, 0x67, 0x65, 0x5f, 0x63, 0x6f, 0x6d, 0x6d, 0x6f, 0x6e,
+	0x5f, 0x74, 0x79, 0x70, 0x65, 0x2e, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x12, 0x0f, 0x6f, 0x73, 0x61,
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+	0x20, 0x0a, 0x1c, 0x53, 0x54, 0x4f, 0x52, 0x41, 0x47, 0x45, 0x5f, 0x50, 0x52, 0x4f, 0x54, 0x4f,
+	0x43, 0x4f, 0x4c, 0x5f, 0x55, 0x4e, 0x53, 0x50, 0x45, 0x43, 0x49, 0x46, 0x49, 0x45, 0x44, 0x10,
+	0x00, 0x12, 0x18, 0x0a, 0x14, 0x53, 0x54, 0x4f, 0x52, 0x41, 0x47, 0x45, 0x5f, 0x50, 0x52, 0x4f,
+	0x54, 0x4f, 0x43, 0x4f, 0x4c, 0x5f, 0x4e, 0x46, 0x53, 0x10, 0x01, 0x12, 0x1a, 0x0a, 0x16, 0x53,
+	0x54, 0x4f, 0x52, 0x41, 0x47, 0x45, 0x5f, 0x50, 0x52, 0x4f, 0x54, 0x4f, 0x43, 0x4f, 0x4c, 0x5f,
+	0x42, 0x4c, 0x4f, 0x43, 0x4b, 0x10, 0x02, 0x42, 0xe6, 0x01, 0x0a, 0x13, 0x63, 0x6f, 0x6d, 0x2e,
+	0x6f, 0x73, 0x61, 0x63, 0x2e, 0x70, 0x72, 0x69, 0x76, 0x61, 0x74, 0x65, 0x2e, 0x76, 0x31, 0x42,
+	0x16, 0x53, 0x74, 0x6f, 0x72, 0x61, 0x67, 0x65, 0x43, 0x6f, 0x6d, 0x6d, 0x6f, 0x6e, 0x54, 0x79,
+	0x70, 0x65, 0x50, 0x72, 0x6f, 0x74, 0x6f, 0x50, 0x01, 0x5a, 0x57, 0x67, 0x69, 0x74, 0x68, 0x75,
+	0x62, 0x2e, 0x63, 0x6f, 0x6d, 0x2f, 0x6f, 0x73, 0x61, 0x63, 0x2d, 0x70, 0x72, 0x6f, 0x6a, 0x65,
+	0x63, 0x74, 0x2f, 0x6f, 0x73, 0x61, 0x63, 0x2f, 0x66, 0x75, 0x6c, 0x66, 0x69, 0x6c, 0x6c, 0x6d,
+	0x65, 0x6e, 0x74, 0x2d, 0x73, 0x65, 0x72, 0x76, 0x69, 0x63, 0x65, 0x2f, 0x69, 0x6e, 0x74, 0x65,
+	0x72, 0x6e, 0x61, 0x6c, 0x2f, 0x61, 0x70, 0x69, 0x2f, 0x6f, 0x73, 0x61, 0x63, 0x2f, 0x70, 0x72,
+	0x69, 0x76, 0x61, 0x74, 0x65, 0x2f, 0x76, 0x31, 0x3b, 0x70, 0x72, 0x69, 0x76, 0x61, 0x74, 0x65,
+	0x76, 0x31, 0xa2, 0x02, 0x03, 0x4f, 0x50, 0x58, 0xaa, 0x02, 0x0f, 0x4f, 0x73, 0x61, 0x63, 0x2e,
+	0x50, 0x72, 0x69, 0x76, 0x61, 0x74, 0x65, 0x2e, 0x56, 0x31, 0xca, 0x02, 0x10, 0x4f, 0x73, 0x61,
+	0x63, 0x5c, 0x50, 0x72, 0x69, 0x76, 0x61, 0x74, 0x65, 0x5f, 0x5c, 0x56, 0x31, 0xe2, 0x02, 0x1c,
+	0x4f, 0x73, 0x61, 0x63, 0x5c, 0x50, 0x72, 0x69, 0x76, 0x61, 0x74, 0x65, 0x5f, 0x5c, 0x56, 0x31,
+	0x5c, 0x47, 0x50, 0x42, 0x4d, 0x65, 0x74, 0x61, 0x64, 0x61, 0x74, 0x61, 0xea, 0x02, 0x11, 0x4f,
+	0x73, 0x61, 0x63, 0x3a, 0x3a, 0x50, 0x72, 0x69, 0x76, 0x61, 0x74, 0x65, 0x3a, 0x3a, 0x56, 0x31,
+	0x62, 0x06, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x33,
+})
+
+var file_osac_private_v1_storage_common_type_proto_enumTypes = make([]protoimpl.EnumInfo, 1)
+var file_osac_private_v1_storage_common_type_proto_goTypes = []any{
+	(StorageProtocol)(0), // 0: osac.private.v1.StorageProtocol
+}
+var file_osac_private_v1_storage_common_type_proto_depIdxs = []int32{
+	0, // [0:0] is the sub-list for method output_type
+	0, // [0:0] is the sub-list for method input_type
+	0, // [0:0] is the sub-list for extension type_name
+	0, // [0:0] is the sub-list for extension extendee
+	0, // [0:0] is the sub-list for field type_name
+}
+
+func init() { file_osac_private_v1_storage_common_type_proto_init() }
+func file_osac_private_v1_storage_common_type_proto_init() {
+	if File_osac_private_v1_storage_common_type_proto != nil {
+		return
+	}
+	type x struct{}
+	out := protoimpl.TypeBuilder{
+		File: protoimpl.DescBuilder{
+			GoPackagePath: reflect.TypeOf(x{}).PkgPath(),
+			RawDescriptor: unsafe.Slice(unsafe.StringData(file_osac_private_v1_storage_common_type_proto_rawDesc), len(file_osac_private_v1_storage_common_type_proto_rawDesc)),
+			NumEnums:      1,
+			NumMessages:   0,
+			NumExtensions: 0,
+			NumServices:   0,
+		},
+		GoTypes:           file_osac_private_v1_storage_common_type_proto_goTypes,
+		DependencyIndexes: file_osac_private_v1_storage_common_type_proto_depIdxs,
+		EnumInfos:         file_osac_private_v1_storage_common_type_proto_enumTypes,
+	}.Build()
+	File_osac_private_v1_storage_common_type_proto = out.File
+	file_osac_private_v1_storage_common_type_proto_goTypes = nil
+	file_osac_private_v1_storage_common_type_proto_depIdxs = nil
+}
diff --git a/fulfillment-service/internal/api/osac/private/v1/storage_common_type_protoopaque.pb.go b/fulfillment-service/internal/api/osac/private/v1/storage_common_type_protoopaque.pb.go
new file mode 100644
index 000000000..925bc3815
--- /dev/null
+++ b/fulfillment-service/internal/api/osac/private/v1/storage_common_type_protoopaque.pb.go
@@ -0,0 +1,151 @@
+//
+// Copyright (c) 2026 Red Hat, Inc.
+//
+// Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with
+// the License. You may obtain a copy of the License at
+//
+//   http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on
+// an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the
+// specific language governing permissions and limitations under the License.
+//
+
+// Code generated by protoc-gen-go. DO NOT EDIT.
+// versions:
+// 	protoc-gen-go v1.36.5
+// 	protoc        (unknown)
+// source: osac/private/v1/storage_common_type.proto
+
+//go:build protoopaque
+
+package privatev1
+
+import (
+	protoreflect "google.golang.org/protobuf/reflect/protoreflect"
+	protoimpl "google.golang.org/protobuf/runtime/protoimpl"
+	reflect "reflect"
+	unsafe "unsafe"
+)
+
+const (
+	// Verify that this generated code is sufficiently up-to-date.
+	_ = protoimpl.EnforceVersion(20 - protoimpl.MinVersion)
+	// Verify that runtime/protoimpl is sufficiently up-to-date.
+	_ = protoimpl.EnforceVersion(protoimpl.MaxVersion - 20)
+)
+
+// Identifies the storage protocol used by storage backends and volumes.
+type StorageProtocol int32
+
+const (
+	// Protocol is unknown or has not been specified.
+	StorageProtocol_STORAGE_PROTOCOL_UNSPECIFIED StorageProtocol = 0
+	// NFS (Network File System) protocol for file-based storage access.
+	StorageProtocol_STORAGE_PROTOCOL_NFS StorageProtocol = 1
+	// Block storage protocol for volume-based storage access.
+	StorageProtocol_STORAGE_PROTOCOL_BLOCK StorageProtocol = 2
+)
+
+// Enum value maps for StorageProtocol.
+var (
+	StorageProtocol_name = map[int32]string{
+		0: "STORAGE_PROTOCOL_UNSPECIFIED",
+		1: "STORAGE_PROTOCOL_NFS",
+		2: "STORAGE_PROTOCOL_BLOCK",
+	}
+	StorageProtocol_value = map[string]int32{
+		"STORAGE_PROTOCOL_UNSPECIFIED": 0,
+		"STORAGE_PROTOCOL_NFS":         1,
+		"STORAGE_PROTOCOL_BLOCK":       2,
+	}
+)
+
+func (x StorageProtocol) Enum() *StorageProtocol {
+	p := new(StorageProtocol)
+	*p = x
+	return p
+}
+
+func (x StorageProtocol) String() string {
+	return protoimpl.X.EnumStringOf(x.Descriptor(), protoreflect.EnumNumber(x))
+}
+
+func (StorageProtocol) Descriptor() protoreflect.EnumDescriptor {
+	return file_osac_private_v1_storage_common_type_proto_enumTypes[0].Descriptor()
+}
+
+func (StorageProtocol) Type() protoreflect.EnumType {
+	return &file_osac_private_v1_storage_common_type_proto_enumTypes[0]
+}
+
+func (x StorageProtocol) Number() protoreflect.EnumNumber {
+	return protoreflect.EnumNumber(x)
+}
+
+var File_osac_private_v1_storage_common_type_proto protoreflect.FileDescriptor
+
+var file_osac_private_v1_storage_common_type_proto_rawDesc = string([]byte{
+	0x0a, 0x29, 0x6f, 0x73, 0x61, 0x63, 0x2f, 0x70, 0x72, 0x69, 0x76, 0x61, 0x74, 0x65, 0x2f, 0x76,
+	0x31, 0x2f, 0x73, 0x74, 0x6f, 0x72, 0x61, 0x67, 0x65, 0x5f, 0x63, 0x6f, 0x6d, 0x6d, 0x6f, 0x6e,
+	0x5f, 0x74, 0x79, 0x70, 0x65, 0x2e, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x12, 0x0f, 0x6f, 0x73, 0x61,
+	0x63, 0x2e, 0x70, 0x72, 0x69, 0x76, 0x61, 0x74, 0x65, 0x2e, 0x76, 0x31, 0x2a, 0x69, 0x0a, 0x0f,
+	0x53, 0x74, 0x6f, 0x72, 0x61, 0x67, 0x65, 0x50, 0x72, 0x6f, 0x74, 0x6f, 0x63, 0x6f, 0x6c, 0x12,
+	0x20, 0x0a, 0x1c, 0x53, 0x54, 0x4f, 0x52, 0x41, 0x47, 0x45, 0x5f, 0x50, 0x52, 0x4f, 0x54, 0x4f,
+	0x43, 0x4f, 0x4c, 0x5f, 0x55, 0x4e, 0x53, 0x50, 0x45, 0x43, 0x49, 0x46, 0x49, 0x45, 0x44, 0x10,
+	0x00, 0x12, 0x18, 0x0a, 0x14, 0x53, 0x54, 0x4f, 0x52, 0x41, 0x47, 0x45, 0x5f, 0x50, 0x52, 0x4f,
+	0x54, 0x4f, 0x43, 0x4f, 0x4c, 0x5f, 0x4e, 0x46, 0x53, 0x10, 0x01, 0x12, 0x1a, 0x0a, 0x16, 0x53,
+	0x54, 0x4f, 0x52, 0x41, 0x47, 0x45, 0x5f, 0x50, 0x52, 0x4f, 0x54, 0x4f, 0x43, 0x4f, 0x4c, 0x5f,
+	0x42, 0x4c, 0x4f, 0x43, 0x4b, 0x10, 0x02, 0x42, 0xe6, 0x01, 0x0a, 0x13, 0x63, 0x6f, 0x6d, 0x2e,
+	0x6f, 0x73, 0x61, 0x63, 0x2e, 0x70, 0x72, 0x69, 0x76, 0x61, 0x74, 0x65, 0x2e, 0x76, 0x31, 0x42,
+	0x16, 0x53, 0x74, 0x6f, 0x72, 0x61, 0x67, 0x65, 0x43, 0x6f, 0x6d, 0x6d, 0x6f, 0x6e, 0x54, 0x79,
+	0x70, 0x65, 0x50, 0x72, 0x6f, 0x74, 0x6f, 0x50, 0x01, 0x5a, 0x57, 0x67, 0x69, 0x74, 0x68, 0x75,
+	0x62, 0x2e, 0x63, 0x6f, 0x6d, 0x2f, 0x6f, 0x73, 0x61, 0x63, 0x2d, 0x70, 0x72, 0x6f, 0x6a, 0x65,
+	0x63, 0x74, 0x2f, 0x6f, 0x73, 0x61, 0x63, 0x2f, 0x66, 0x75, 0x6c, 0x66, 0x69, 0x6c, 0x6c, 0x6d,
+	0x65, 0x6e, 0x74, 0x2d, 0x73, 0x65, 0x72, 0x76, 0x69, 0x63, 0x65, 0x2f, 0x69, 0x6e, 0x74, 0x65,
+	0x72, 0x6e, 0x61, 0x6c, 0x2f, 0x61, 0x70, 0x69, 0x2f, 0x6f, 0x73, 0x61, 0x63, 0x2f, 0x70, 0x72,
+	0x69, 0x76, 0x61, 0x74, 0x65, 0x2f, 0x76, 0x31, 0x3b, 0x70, 0x72, 0x69, 0x76, 0x61, 0x74, 0x65,
+	0x76, 0x31, 0xa2, 0x02, 0x03, 0x4f, 0x50, 0x58, 0xaa, 0x02, 0x0f, 0x4f, 0x73, 0x61, 0x63, 0x2e,
+	0x50, 0x72, 0x69, 0x76, 0x61, 0x74, 0x65, 0x2e, 0x56, 0x31, 0xca, 0x02, 0x10, 0x4f, 0x73, 0x61,
+	0x63, 0x5c, 0x50, 0x72, 0x69, 0x76, 0x61, 0x74, 0x65, 0x5f, 0x5c, 0x56, 0x31, 0xe2, 0x02, 0x1c,
+	0x4f, 0x73, 0x61, 0x63, 0x5c, 0x50, 0x72, 0x69, 0x76, 0x61, 0x74, 0x65, 0x5f, 0x5c, 0x56, 0x31,
+	0x5c, 0x47, 0x50, 0x42, 0x4d, 0x65, 0x74, 0x61, 0x64, 0x61, 0x74, 0x61, 0xea, 0x02, 0x11, 0x4f,
+	0x73, 0x61, 0x63, 0x3a, 0x3a, 0x50, 0x72, 0x69, 0x76, 0x61, 0x74, 0x65, 0x3a, 0x3a, 0x56, 0x31,
+	0x62, 0x06, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x33,
+})
+
+var file_osac_private_v1_storage_common_type_proto_enumTypes = make([]protoimpl.EnumInfo, 1)
+var file_osac_private_v1_storage_common_type_proto_goTypes = []any{
+	(StorageProtocol)(0), // 0: osac.private.v1.StorageProtocol
+}
+var file_osac_private_v1_storage_common_type_proto_depIdxs = []int32{
+	0, // [0:0] is the sub-list for method output_type
+	0, // [0:0] is the sub-list for method input_type
+	0, // [0:0] is the sub-list for extension type_name
+	0, // [0:0] is the sub-list for extension extendee
+	0, // [0:0] is the sub-list for field type_name
+}
+
+func init() { file_osac_private_v1_storage_common_type_proto_init() }
+func file_osac_private_v1_storage_common_type_proto_init() {
+	if File_osac_private_v1_storage_common_type_proto != nil {
+		return
+	}
+	type x struct{}
+	out := protoimpl.TypeBuilder{
+		File: protoimpl.DescBuilder{
+			GoPackagePath: reflect.TypeOf(x{}).PkgPath(),
+			RawDescriptor: unsafe.Slice(unsafe.StringData(file_osac_private_v1_storage_common_type_proto_rawDesc), len(file_osac_private_v1_storage_common_type_proto_rawDesc)),
+			NumEnums:      1,
+			NumMessages:   0,
+			NumExtensions: 0,
+			NumServices:   0,
+		},
+		GoTypes:           file_osac_private_v1_storage_common_type_proto_goTypes,
+		DependencyIndexes: file_osac_private_v1_storage_common_type_proto_depIdxs,
+		EnumInfos:         file_osac_private_v1_storage_common_type_proto_enumTypes,
+	}.Build()
+	File_osac_private_v1_storage_common_type_proto = out.File
+	file_osac_private_v1_storage_common_type_proto_goTypes = nil
+	file_osac_private_v1_storage_common_type_proto_depIdxs = nil
+}
diff --git a/fulfillment-service/internal/api/osac/private/v1/storage_tier_type.pb.go b/fulfillment-service/internal/api/osac/private/v1/storage_tier_type.pb.go
index dfe517fae..1ade28789 100644
--- a/fulfillment-service/internal/api/osac/private/v1/storage_tier_type.pb.go
+++ b/fulfillment-service/internal/api/osac/private/v1/storage_tier_type.pb.go
@@ -35,54 +35,6 @@ const (
 	_ = protoimpl.EnforceVersion(protoimpl.MaxVersion - 20)
 )
 
-// Identifies the storage protocol used by a backend association within a storage tier.
-type StorageProtocol int32
-
-const (
-	// Protocol is unknown or has not been specified.
-	StorageProtocol_STORAGE_PROTOCOL_UNSPECIFIED StorageProtocol = 0
-	// NFS (Network File System) protocol for file-based storage access.
-	StorageProtocol_STORAGE_PROTOCOL_NFS StorageProtocol = 1
-	// Block storage protocol for volume-based storage access.
-	StorageProtocol_STORAGE_PROTOCOL_BLOCK StorageProtocol = 2
-)
-
-// Enum value maps for StorageProtocol.
-var (
-	StorageProtocol_name = map[int32]string{
-		0: "STORAGE_PROTOCOL_UNSPECIFIED",
-		1: "STORAGE_PROTOCOL_NFS",
-		2: "STORAGE_PROTOCOL_BLOCK",
-	}
-	StorageProtocol_value = map[string]int32{
-		"STORAGE_PROTOCOL_UNSPECIFIED": 0,
-		"STORAGE_PROTOCOL_NFS":         1,
-		"STORAGE_PROTOCOL_BLOCK":       2,
-	}
-)
-
-func (x StorageProtocol) Enum() *StorageProtocol {
-	p := new(StorageProtocol)
-	*p = x
-	return p
-}
-
-func (x StorageProtocol) String() string {
-	return protoimpl.X.EnumStringOf(x.Descriptor(), protoreflect.EnumNumber(x))
-}
-
-func (StorageProtocol) Descriptor() protoreflect.EnumDescriptor {
-	return file_osac_private_v1_storage_tier_type_proto_enumTypes[0].Descriptor()
-}
-
-func (StorageProtocol) Type() protoreflect.EnumType {
-	return &file_osac_private_v1_storage_tier_type_proto_enumTypes[0]
-}
-
-func (x StorageProtocol) Number() protoreflect.EnumNumber {
-	return protoreflect.EnumNumber(x)
-}
-
 // Lifecycle states for StorageTier resources.
 type StorageTierState int32
 
@@ -116,11 +68,11 @@ func (x StorageTierState) String() string {
 }
 
 func (StorageTierState) Descriptor() protoreflect.EnumDescriptor {
-	return file_osac_private_v1_storage_tier_type_proto_enumTypes[1].Descriptor()
+	return file_osac_private_v1_storage_tier_type_proto_enumTypes[0].Descriptor()
 }
 
 func (StorageTierState) Type() protoreflect.EnumType {
-	return &file_osac_private_v1_storage_tier_type_proto_enumTypes[1]
+	return &file_osac_private_v1_storage_tier_type_proto_enumTypes[0]
 }
 
 func (x StorageTierState) Number() protoreflect.EnumNumber {
@@ -587,60 +539,56 @@ var file_osac_private_v1_storage_tier_type_proto_rawDesc = string([]byte{
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@@ -664,24 +612,24 @@ var file_osac_private_v1_storage_tier_type_proto_rawDesc = string([]byte{
 	0x6f, 0x74, 0x6f, 0x33,
 })
 
-var file_osac_private_v1_storage_tier_type_proto_enumTypes = make([]protoimpl.EnumInfo, 2)
+var file_osac_private_v1_storage_tier_type_proto_enumTypes = make([]protoimpl.EnumInfo, 1)
 var file_osac_private_v1_storage_tier_type_proto_msgTypes = make([]protoimpl.MessageInfo, 4)
 var file_osac_private_v1_storage_tier_type_proto_goTypes = []any{
-	(StorageProtocol)(0),       // 0: osac.private.v1.StorageProtocol
-	(StorageTierState)(0),      // 1: osac.private.v1.StorageTierState
-	(*BackendAssociation)(nil), // 2: osac.private.v1.BackendAssociation
-	(*StorageTier)(nil),        // 3: osac.private.v1.StorageTier
-	(*StorageTierSpec)(nil),    // 4: osac.private.v1.StorageTierSpec
-	(*StorageTierStatus)(nil),  // 5: osac.private.v1.StorageTierStatus
+	(StorageTierState)(0),      // 0: osac.private.v1.StorageTierState
+	(*BackendAssociation)(nil), // 1: osac.private.v1.BackendAssociation
+	(*StorageTier)(nil),        // 2: osac.private.v1.StorageTier
+	(*StorageTierSpec)(nil),    // 3: osac.private.v1.StorageTierSpec
+	(*StorageTierStatus)(nil),  // 4: osac.private.v1.StorageTierStatus
+	(StorageProtocol)(0),       // 5: osac.private.v1.StorageProtocol
 	(*Metadata)(nil),           // 6: osac.private.v1.Metadata
 }
 var file_osac_private_v1_storage_tier_type_proto_depIdxs = []int32{
-	0, // 0: osac.private.v1.BackendAssociation.protocol:type_name -> osac.private.v1.StorageProtocol
+	5, // 0: osac.private.v1.BackendAssociation.protocol:type_name -> osac.private.v1.StorageProtocol
 	6, // 1: osac.private.v1.StorageTier.metadata:type_name -> osac.private.v1.Metadata
-	4, // 2: osac.private.v1.StorageTier.spec:type_name -> osac.private.v1.StorageTierSpec
-	5, // 3: osac.private.v1.StorageTier.status:type_name -> osac.private.v1.StorageTierStatus
-	2, // 4: osac.private.v1.StorageTierSpec.backends:type_name -> osac.private.v1.BackendAssociation
-	1, // 5: osac.private.v1.StorageTierStatus.state:type_name -> osac.private.v1.StorageTierState
+	3, // 2: osac.private.v1.StorageTier.spec:type_name -> osac.private.v1.StorageTierSpec
+	4, // 3: osac.private.v1.StorageTier.status:type_name -> osac.private.v1.StorageTierStatus
+	1, // 4: osac.private.v1.StorageTierSpec.backends:type_name -> osac.private.v1.BackendAssociation
+	0, // 5: osac.private.v1.StorageTierStatus.state:type_name -> osac.private.v1.StorageTierState
 	6, // [6:6] is the sub-list for method output_type
 	6, // [6:6] is the sub-list for method input_type
 	6, // [6:6] is the sub-list for extension type_name
@@ -695,13 +643,14 @@ func file_osac_private_v1_storage_tier_type_proto_init() {
 		return
 	}
 	file_osac_private_v1_metadata_type_proto_init()
+	file_osac_private_v1_storage_common_type_proto_init()
 	file_osac_private_v1_storage_tier_type_proto_msgTypes[3].OneofWrappers = []any{}
 	type x struct{}
 	out := protoimpl.TypeBuilder{
 		File: protoimpl.DescBuilder{
 			GoPackagePath: reflect.TypeOf(x{}).PkgPath(),
 			RawDescriptor: unsafe.Slice(unsafe.StringData(file_osac_private_v1_storage_tier_type_proto_rawDesc), len(file_osac_private_v1_storage_tier_type_proto_rawDesc)),
-			NumEnums:      2,
+			NumEnums:      1,
 			NumMessages:   4,
 			NumExtensions: 0,
 			NumServices:   0,
diff --git a/fulfillment-service/internal/api/osac/private/v1/storage_tier_type_protoopaque.pb.go b/fulfillment-service/internal/api/osac/private/v1/storage_tier_type_protoopaque.pb.go
index 67a24caf0..18e31d46d 100644
--- a/fulfillment-service/internal/api/osac/private/v1/storage_tier_type_protoopaque.pb.go
+++ b/fulfillment-service/internal/api/osac/private/v1/storage_tier_type_protoopaque.pb.go
@@ -35,54 +35,6 @@ const (
 	_ = protoimpl.EnforceVersion(protoimpl.MaxVersion - 20)
 )
 
-// Identifies the storage protocol used by a backend association within a storage tier.
-type StorageProtocol int32
-
-const (
-	// Protocol is unknown or has not been specified.
-	StorageProtocol_STORAGE_PROTOCOL_UNSPECIFIED StorageProtocol = 0
-	// NFS (Network File System) protocol for file-based storage access.
-	StorageProtocol_STORAGE_PROTOCOL_NFS StorageProtocol = 1
-	// Block storage protocol for volume-based storage access.
-	StorageProtocol_STORAGE_PROTOCOL_BLOCK StorageProtocol = 2
-)
-
-// Enum value maps for StorageProtocol.
-var (
-	StorageProtocol_name = map[int32]string{
-		0: "STORAGE_PROTOCOL_UNSPECIFIED",
-		1: "STORAGE_PROTOCOL_NFS",
-		2: "STORAGE_PROTOCOL_BLOCK",
-	}
-	StorageProtocol_value = map[string]int32{
-		"STORAGE_PROTOCOL_UNSPECIFIED": 0,
-		"STORAGE_PROTOCOL_NFS":         1,
-		"STORAGE_PROTOCOL_BLOCK":       2,
-	}
-)
-
-func (x StorageProtocol) Enum() *StorageProtocol {
-	p := new(StorageProtocol)
-	*p = x
-	return p
-}
-
-func (x StorageProtocol) String() string {
-	return protoimpl.X.EnumStringOf(x.Descriptor(), protoreflect.EnumNumber(x))
-}
-
-func (StorageProtocol) Descriptor() protoreflect.EnumDescriptor {
-	return file_osac_private_v1_storage_tier_type_proto_enumTypes[0].Descriptor()
-}
-
-func (StorageProtocol) Type() protoreflect.EnumType {
-	return &file_osac_private_v1_storage_tier_type_proto_enumTypes[0]
-}
-
-func (x StorageProtocol) Number() protoreflect.EnumNumber {
-	return protoreflect.EnumNumber(x)
-}
-
 // Lifecycle states for StorageTier resources.
 type StorageTierState int32
 
@@ -116,11 +68,11 @@ func (x StorageTierState) String() string {
 }
 
 func (StorageTierState) Descriptor() protoreflect.EnumDescriptor {
-	return file_osac_private_v1_storage_tier_type_proto_enumTypes[1].Descriptor()
+	return file_osac_private_v1_storage_tier_type_proto_enumTypes[0].Descriptor()
 }
 
 func (StorageTierState) Type() protoreflect.EnumType {
-	return &file_osac_private_v1_storage_tier_type_proto_enumTypes[1]
+	return &file_osac_private_v1_storage_tier_type_proto_enumTypes[0]
 }
 
 func (x StorageTierState) Number() protoreflect.EnumNumber {
@@ -585,60 +537,56 @@ var file_osac_private_v1_storage_tier_type_proto_rawDesc = string([]byte{
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+	0x70, 0x72, 0x69, 0x76, 0x61, 0x74, 0x65, 0x2e, 0x76, 0x31, 0x2e, 0x4d, 0x65, 0x74, 0x61, 0x64,
+	0x61, 0x74, 0x61, 0x52, 0x08, 0x6d, 0x65, 0x74, 0x61, 0x64, 0x61, 0x74, 0x61, 0x12, 0x34, 0x0a,
+	0x04, 0x73, 0x70, 0x65, 0x63, 0x18, 0x03, 0x20, 0x01, 0x28, 0x0b, 0x32, 0x20, 0x2e, 0x6f, 0x73,
+	0x61, 0x63, 0x2e, 0x70, 0x72, 0x69, 0x76, 0x61, 0x74, 0x65, 0x2e, 0x76, 0x31, 0x2e, 0x53, 0x74,
+	0x6f, 0x72, 0x61, 0x67, 0x65, 0x54, 0x69, 0x65, 0x72, 0x53, 0x70, 0x65, 0x63, 0x52, 0x04, 0x73,
+	0x70, 0x65, 0x63, 0x12, 0x3a, 0x0a, 0x06, 0x73, 0x74, 0x61, 0x74, 0x75, 0x73, 0x18, 0x04, 0x20,
+	0x01, 0x28, 0x0b, 0x32, 0x22, 0x2e, 0x6f, 0x73, 0x61, 0x63, 0x2e, 0x70, 0x72, 0x69, 0x76, 0x61,
+	0x74, 0x65, 0x2e, 0x76, 0x31, 0x2e, 0x53, 0x74, 0x6f, 0x72, 0x61, 0x67, 0x65, 0x54, 0x69, 0x65,
+	0x72, 0x53, 0x74, 0x61, 0x74, 0x75, 0x73, 0x52, 0x06, 0x73, 0x74, 0x61, 0x74, 0x75, 0x73, 0x22,
+	0x74, 0x0a, 0x0f, 0x53, 0x74, 0x6f, 0x72, 0x61, 0x67, 0x65, 0x54, 0x69, 0x65, 0x72, 0x53, 0x70,
+	0x65, 0x63, 0x12, 0x20, 0x0a, 0x0b, 0x64, 0x65, 0x73, 0x63, 0x72, 0x69, 0x70, 0x74, 0x69, 0x6f,
+	0x6e, 0x18, 0x01, 0x20, 0x01, 0x28, 0x09, 0x52, 0x0b, 0x64, 0x65, 0x73, 0x63, 0x72, 0x69, 0x70,
+	0x74, 0x69, 0x6f, 0x6e, 0x12, 0x3f, 0x0a, 0x08, 0x62, 0x61, 0x63, 0x6b, 0x65, 0x6e, 0x64, 0x73,
+	0x18, 0x02, 0x20, 0x03, 0x28, 0x0b, 0x32, 0x23, 0x2e, 0x6f, 0x73, 0x61, 0x63, 0x2e, 0x70, 0x72,
+	0x69, 0x76, 0x61, 0x74, 0x65, 0x2e, 0x76, 0x31, 0x2e, 0x42, 0x61, 0x63, 0x6b, 0x65, 0x6e, 0x64,
+	0x41, 0x73, 0x73, 0x6f, 0x63, 0x69, 0x61, 0x74, 0x69, 0x6f, 0x6e, 0x52, 0x08, 0x62, 0x61, 0x63,
+	0x6b, 0x65, 0x6e, 0x64, 0x73, 0x22, 0x77, 0x0a, 0x11, 0x53, 0x74, 0x6f, 0x72, 0x61, 0x67, 0x65,
+	0x54, 0x69, 0x65, 0x72, 0x53, 0x74, 0x61, 0x74, 0x75, 0x73, 0x12, 0x37, 0x0a, 0x05, 0x73, 0x74,
+	0x61, 0x74, 0x65, 0x18, 0x01, 0x20, 0x01, 0x28, 0x0e, 0x32, 0x21, 0x2e, 0x6f, 0x73, 0x61, 0x63,
+	0x2e, 0x70, 0x72, 0x69, 0x76, 0x61, 0x74, 0x65, 0x2e, 0x76, 0x31, 0x2e, 0x53, 0x74, 0x6f, 0x72,
+	0x61, 0x67, 0x65, 0x54, 0x69, 0x65, 0x72, 0x53, 0x74, 0x61, 0x74, 0x65, 0x52, 0x05, 0x73, 0x74,
+	0x61, 0x74, 0x65, 0x12, 0x1d, 0x0a, 0x07, 0x6d, 0x65, 0x73, 0x73, 0x61, 0x67, 0x65, 0x18, 0x02,
+	0x20, 0x01, 0x28, 0x09, 0x48, 0x00, 0x52, 0x07, 0x6d, 0x65, 0x73, 0x73, 0x61, 0x67, 0x65, 0x88,
+	0x01, 0x01, 0x42, 0x0a, 0x0a, 0x08, 0x5f, 0x6d, 0x65, 0x73, 0x73, 0x61, 0x67, 0x65, 0x2a, 0x55,
 	0x0a, 0x10, 0x53, 0x74, 0x6f, 0x72, 0x61, 0x67, 0x65, 0x54, 0x69, 0x65, 0x72, 0x53, 0x74, 0x61,
 	0x74, 0x65, 0x12, 0x22, 0x0a, 0x1e, 0x53, 0x54, 0x4f, 0x52, 0x41, 0x47, 0x45, 0x5f, 0x54, 0x49,
 	0x45, 0x52, 0x5f, 0x53, 0x54, 0x41, 0x54, 0x45, 0x5f, 0x55, 0x4e, 0x53, 0x50, 0x45, 0x43, 0x49,
@@ -662,24 +610,24 @@ var file_osac_private_v1_storage_tier_type_proto_rawDesc = string([]byte{
 	0x6f, 0x74, 0x6f, 0x33,
 })
 
-var file_osac_private_v1_storage_tier_type_proto_enumTypes = make([]protoimpl.EnumInfo, 2)
+var file_osac_private_v1_storage_tier_type_proto_enumTypes = make([]protoimpl.EnumInfo, 1)
 var file_osac_private_v1_storage_tier_type_proto_msgTypes = make([]protoimpl.MessageInfo, 4)
 var file_osac_private_v1_storage_tier_type_proto_goTypes = []any{
-	(StorageProtocol)(0),       // 0: osac.private.v1.StorageProtocol
-	(StorageTierState)(0),      // 1: osac.private.v1.StorageTierState
-	(*BackendAssociation)(nil), // 2: osac.private.v1.BackendAssociation
-	(*StorageTier)(nil),        // 3: osac.private.v1.StorageTier
-	(*StorageTierSpec)(nil),    // 4: osac.private.v1.StorageTierSpec
-	(*StorageTierStatus)(nil),  // 5: osac.private.v1.StorageTierStatus
+	(StorageTierState)(0),      // 0: osac.private.v1.StorageTierState
+	(*BackendAssociation)(nil), // 1: osac.private.v1.BackendAssociation
+	(*StorageTier)(nil),        // 2: osac.private.v1.StorageTier
+	(*StorageTierSpec)(nil),    // 3: osac.private.v1.StorageTierSpec
+	(*StorageTierStatus)(nil),  // 4: osac.private.v1.StorageTierStatus
+	(StorageProtocol)(0),       // 5: osac.private.v1.StorageProtocol
 	(*Metadata)(nil),           // 6: osac.private.v1.Metadata
 }
 var file_osac_private_v1_storage_tier_type_proto_depIdxs = []int32{
-	0, // 0: osac.private.v1.BackendAssociation.protocol:type_name -> osac.private.v1.StorageProtocol
+	5, // 0: osac.private.v1.BackendAssociation.protocol:type_name -> osac.private.v1.StorageProtocol
 	6, // 1: osac.private.v1.StorageTier.metadata:type_name -> osac.private.v1.Metadata
-	4, // 2: osac.private.v1.StorageTier.spec:type_name -> osac.private.v1.StorageTierSpec
-	5, // 3: osac.private.v1.StorageTier.status:type_name -> osac.private.v1.StorageTierStatus
-	2, // 4: osac.private.v1.StorageTierSpec.backends:type_name -> osac.private.v1.BackendAssociation
-	1, // 5: osac.private.v1.StorageTierStatus.state:type_name -> osac.private.v1.StorageTierState
+	3, // 2: osac.private.v1.StorageTier.spec:type_name -> osac.private.v1.StorageTierSpec
+	4, // 3: osac.private.v1.StorageTier.status:type_name -> osac.private.v1.StorageTierStatus
+	1, // 4: osac.private.v1.StorageTierSpec.backends:type_name -> osac.private.v1.BackendAssociation
+	0, // 5: osac.private.v1.StorageTierStatus.state:type_name -> osac.private.v1.StorageTierState
 	6, // [6:6] is the sub-list for method output_type
 	6, // [6:6] is the sub-list for method input_type
 	6, // [6:6] is the sub-list for extension type_name
@@ -693,13 +641,14 @@ func file_osac_private_v1_storage_tier_type_proto_init() {
 		return
 	}
 	file_osac_private_v1_metadata_type_proto_init()
+	file_osac_private_v1_storage_common_type_proto_init()
 	file_osac_private_v1_storage_tier_type_proto_msgTypes[3].OneofWrappers = []any{}
 	type x struct{}
 	out := protoimpl.TypeBuilder{
 		File: protoimpl.DescBuilder{
 			GoPackagePath: reflect.TypeOf(x{}).PkgPath(),
 			RawDescriptor: unsafe.Slice(unsafe.StringData(file_osac_private_v1_storage_tier_type_proto_rawDesc), len(file_osac_private_v1_storage_tier_type_proto_rawDesc)),
-			NumEnums:      2,
+			NumEnums:      1,
 			NumMessages:   4,
 			NumExtensions: 0,
 			NumServices:   0,
diff --git a/fulfillment-service/internal/api/osac/private/v1/volume_type.pb.go b/fulfillment-service/internal/api/osac/private/v1/volume_type.pb.go
new file mode 100644
index 000000000..c337786d8
--- /dev/null
+++ b/fulfillment-service/internal/api/osac/private/v1/volume_type.pb.go
@@ -0,0 +1,979 @@
+//
+// Copyright (c) 2026 Red Hat, Inc.
+//
+// Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with
+// the License. You may obtain a copy of the License at
+//
+//   http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on
+// an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the
+// specific language governing permissions and limitations under the License.
+//
+
+// Code generated by protoc-gen-go. DO NOT EDIT.
+// versions:
+// 	protoc-gen-go v1.36.5
+// 	protoc        (unknown)
+// source: osac/private/v1/volume_type.proto
+
+//go:build !protoopaque
+
+package privatev1
+
+import (
+	_ "buf.build/gen/go/bufbuild/protovalidate/protocolbuffers/go/buf/validate"
+	protoreflect "google.golang.org/protobuf/reflect/protoreflect"
+	protoimpl "google.golang.org/protobuf/runtime/protoimpl"
+	reflect "reflect"
+	unsafe "unsafe"
+)
+
+const (
+	// Verify that this generated code is sufficiently up-to-date.
+	_ = protoimpl.EnforceVersion(20 - protoimpl.MinVersion)
+	// Verify that runtime/protoimpl is sufficiently up-to-date.
+	_ = protoimpl.EnforceVersion(protoimpl.MaxVersion - 20)
+)
+
+// Access modes for Volume resources, matching Kubernetes PersistentVolume access modes.
+// https://kubernetes.io/docs/concepts/storage/persistent-volumes/#access-modes
+type VolumeAccessMode int32
+
+const (
+	// Access mode is unknown or has not been specified.
+	VolumeAccessMode_VOLUME_ACCESS_MODE_UNSPECIFIED VolumeAccessMode = 0
+	// The volume can be mounted as read-write by a single node.
+	VolumeAccessMode_VOLUME_ACCESS_MODE_READ_WRITE_ONCE VolumeAccessMode = 1
+	// The volume can be mounted as read-only by many nodes.
+	VolumeAccessMode_VOLUME_ACCESS_MODE_READ_ONLY_MANY VolumeAccessMode = 2
+	// The volume can be mounted as read-write by many nodes.
+	VolumeAccessMode_VOLUME_ACCESS_MODE_READ_WRITE_MANY VolumeAccessMode = 3
+	// The volume can be mounted as read-write by a single pod (requires CSI 1.5+).
+	VolumeAccessMode_VOLUME_ACCESS_MODE_READ_WRITE_ONCE_POD VolumeAccessMode = 4
+)
+
+// Enum value maps for VolumeAccessMode.
+var (
+	VolumeAccessMode_name = map[int32]string{
+		0: "VOLUME_ACCESS_MODE_UNSPECIFIED",
+		1: "VOLUME_ACCESS_MODE_READ_WRITE_ONCE",
+		2: "VOLUME_ACCESS_MODE_READ_ONLY_MANY",
+		3: "VOLUME_ACCESS_MODE_READ_WRITE_MANY",
+		4: "VOLUME_ACCESS_MODE_READ_WRITE_ONCE_POD",
+	}
+	VolumeAccessMode_value = map[string]int32{
+		"VOLUME_ACCESS_MODE_UNSPECIFIED":         0,
+		"VOLUME_ACCESS_MODE_READ_WRITE_ONCE":     1,
+		"VOLUME_ACCESS_MODE_READ_ONLY_MANY":      2,
+		"VOLUME_ACCESS_MODE_READ_WRITE_MANY":     3,
+		"VOLUME_ACCESS_MODE_READ_WRITE_ONCE_POD": 4,
+	}
+)
+
+func (x VolumeAccessMode) Enum() *VolumeAccessMode {
+	p := new(VolumeAccessMode)
+	*p = x
+	return p
+}
+
+func (x VolumeAccessMode) String() string {
+	return protoimpl.X.EnumStringOf(x.Descriptor(), protoreflect.EnumNumber(x))
+}
+
+func (VolumeAccessMode) Descriptor() protoreflect.EnumDescriptor {
+	return file_osac_private_v1_volume_type_proto_enumTypes[0].Descriptor()
+}
+
+func (VolumeAccessMode) Type() protoreflect.EnumType {
+	return &file_osac_private_v1_volume_type_proto_enumTypes[0]
+}
+
+func (x VolumeAccessMode) Number() protoreflect.EnumNumber {
+	return protoreflect.EnumNumber(x)
+}
+
+// Lifecycle states for Volume resources.
+type VolumeState int32
+
+const (
+	// State is unknown or has not been determined yet.
+	VolumeState_VOLUME_STATE_UNSPECIFIED VolumeState = 0
+	// The volume is being provisioned on the storage backend.
+	VolumeState_VOLUME_STATE_CREATING VolumeState = 1
+	// The volume has been provisioned and is ready for use.
+	VolumeState_VOLUME_STATE_AVAILABLE VolumeState = 2
+	// The volume provisioning has permanently failed after max retries and requires admin intervention.
+	VolumeState_VOLUME_STATE_FAILED VolumeState = 3
+	// The volume is being deprovisioned from the storage backend.
+	VolumeState_VOLUME_STATE_DELETING VolumeState = 4
+	// The volume has been fully deprovisioned and the record is archived.
+	VolumeState_VOLUME_STATE_DELETED VolumeState = 5
+)
+
+// Enum value maps for VolumeState.
+var (
+	VolumeState_name = map[int32]string{
+		0: "VOLUME_STATE_UNSPECIFIED",
+		1: "VOLUME_STATE_CREATING",
+		2: "VOLUME_STATE_AVAILABLE",
+		3: "VOLUME_STATE_FAILED",
+		4: "VOLUME_STATE_DELETING",
+		5: "VOLUME_STATE_DELETED",
+	}
+	VolumeState_value = map[string]int32{
+		"VOLUME_STATE_UNSPECIFIED": 0,
+		"VOLUME_STATE_CREATING":    1,
+		"VOLUME_STATE_AVAILABLE":   2,
+		"VOLUME_STATE_FAILED":      3,
+		"VOLUME_STATE_DELETING":    4,
+		"VOLUME_STATE_DELETED":     5,
+	}
+)
+
+func (x VolumeState) Enum() *VolumeState {
+	p := new(VolumeState)
+	*p = x
+	return p
+}
+
+func (x VolumeState) String() string {
+	return protoimpl.X.EnumStringOf(x.Descriptor(), protoreflect.EnumNumber(x))
+}
+
+func (VolumeState) Descriptor() protoreflect.EnumDescriptor {
+	return file_osac_private_v1_volume_type_proto_enumTypes[1].Descriptor()
+}
+
+func (VolumeState) Type() protoreflect.EnumType {
+	return &file_osac_private_v1_volume_type_proto_enumTypes[1]
+}
+
+func (x VolumeState) Number() protoreflect.EnumNumber {
+	return protoreflect.EnumNumber(x)
+}
+
+// Identifies the PVC that triggered the volume creation.
+type PVCReference struct {
+	state protoimpl.MessageState `protogen:"hybrid.v1"`
+	// Name of the PersistentVolumeClaim.
+	Name string `protobuf:"bytes,1,opt,name=name,proto3" json:"name,omitempty"`
+	// Namespace of the PersistentVolumeClaim.
+	Namespace string `protobuf:"bytes,2,opt,name=namespace,proto3" json:"namespace,omitempty"`
+	// Cluster where the PersistentVolumeClaim exists.
+	Cluster       string `protobuf:"bytes,3,opt,name=cluster,proto3" json:"cluster,omitempty"`
+	unknownFields protoimpl.UnknownFields
+	sizeCache     protoimpl.SizeCache
+}
+
+func (x *PVCReference) Reset() {
+	*x = PVCReference{}
+	mi := &file_osac_private_v1_volume_type_proto_msgTypes[0]
+	ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+	ms.StoreMessageInfo(mi)
+}
+
+func (x *PVCReference) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*PVCReference) ProtoMessage() {}
+
+func (x *PVCReference) ProtoReflect() protoreflect.Message {
+	mi := &file_osac_private_v1_volume_type_proto_msgTypes[0]
+	if x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+func (x *PVCReference) GetName() string {
+	if x != nil {
+		return x.Name
+	}
+	return ""
+}
+
+func (x *PVCReference) GetNamespace() string {
+	if x != nil {
+		return x.Namespace
+	}
+	return ""
+}
+
+func (x *PVCReference) GetCluster() string {
+	if x != nil {
+		return x.Cluster
+	}
+	return ""
+}
+
+func (x *PVCReference) SetName(v string) {
+	x.Name = v
+}
+
+func (x *PVCReference) SetNamespace(v string) {
+	x.Namespace = v
+}
+
+func (x *PVCReference) SetCluster(v string) {
+	x.Cluster = v
+}
+
+type PVCReference_builder struct {
+	_ [0]func() // Prevents comparability and use of unkeyed literals for the builder.
+
+	// Name of the PersistentVolumeClaim.
+	Name string
+	// Namespace of the PersistentVolumeClaim.
+	Namespace string
+	// Cluster where the PersistentVolumeClaim exists.
+	Cluster string
+}
+
+func (b0 PVCReference_builder) Build() *PVCReference {
+	m0 := &PVCReference{}
+	b, x := &b0, m0
+	_, _ = b, x
+	x.Name = b.Name
+	x.Namespace = b.Namespace
+	x.Cluster = b.Cluster
+	return m0
+}
+
+// Identifies the PV created for a volume.
+type PVReference struct {
+	state protoimpl.MessageState `protogen:"hybrid.v1"`
+	// Name of the PersistentVolume.
+	Name string `protobuf:"bytes,1,opt,name=name,proto3" json:"name,omitempty"`
+	// Cluster where the PersistentVolume exists.
+	Cluster       string `protobuf:"bytes,2,opt,name=cluster,proto3" json:"cluster,omitempty"`
+	unknownFields protoimpl.UnknownFields
+	sizeCache     protoimpl.SizeCache
+}
+
+func (x *PVReference) Reset() {
+	*x = PVReference{}
+	mi := &file_osac_private_v1_volume_type_proto_msgTypes[1]
+	ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+	ms.StoreMessageInfo(mi)
+}
+
+func (x *PVReference) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*PVReference) ProtoMessage() {}
+
+func (x *PVReference) ProtoReflect() protoreflect.Message {
+	mi := &file_osac_private_v1_volume_type_proto_msgTypes[1]
+	if x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+func (x *PVReference) GetName() string {
+	if x != nil {
+		return x.Name
+	}
+	return ""
+}
+
+func (x *PVReference) GetCluster() string {
+	if x != nil {
+		return x.Cluster
+	}
+	return ""
+}
+
+func (x *PVReference) SetName(v string) {
+	x.Name = v
+}
+
+func (x *PVReference) SetCluster(v string) {
+	x.Cluster = v
+}
+
+type PVReference_builder struct {
+	_ [0]func() // Prevents comparability and use of unkeyed literals for the builder.
+
+	// Name of the PersistentVolume.
+	Name string
+	// Cluster where the PersistentVolume exists.
+	Cluster string
+}
+
+func (b0 PVReference_builder) Build() *PVReference {
+	m0 := &PVReference{}
+	b, x := &b0, m0
+	_, _ = b, x
+	x.Name = b.Name
+	x.Cluster = b.Cluster
+	return m0
+}
+
+// Represents a block storage volume managed by the OSAC storage control plane.
+//
+// Volumes are tenant-scoped resources that represent storage provisioned on a backend storage array
+// through the OSAC CSI driver. The fulfillment-service tracks volume inventory in PostgreSQL and
+// reconciles Volume CRs on the hub cluster. The osac-operator Volume controller handles vendor
+// provisioning via the backend's CSI controller.
+//
+// Volumes are created through the private API, typically by the OSAC CSI driver in response to a
+// PVC on a tenant cluster. The spec captures the user's requested configuration (tier, size,
+// access mode), while the status tracks the system-resolved state (vendor volume ID, backend,
+// protocol).
+type Volume struct {
+	state protoimpl.MessageState `protogen:"hybrid.v1"`
+	// Unique identifier of the volume.
+	Id string `protobuf:"bytes,1,opt,name=id,proto3" json:"id,omitempty"`
+	// Metadata of the volume.
+	Metadata *Metadata `protobuf:"bytes,2,opt,name=metadata,proto3" json:"metadata,omitempty"`
+	// Desired configuration of the volume (immutable after creation).
+	Spec *VolumeSpec `protobuf:"bytes,3,opt,name=spec,proto3" json:"spec,omitempty"`
+	// Current operational status of the volume.
+	Status        *VolumeStatus `protobuf:"bytes,4,opt,name=status,proto3" json:"status,omitempty"`
+	unknownFields protoimpl.UnknownFields
+	sizeCache     protoimpl.SizeCache
+}
+
+func (x *Volume) Reset() {
+	*x = Volume{}
+	mi := &file_osac_private_v1_volume_type_proto_msgTypes[2]
+	ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+	ms.StoreMessageInfo(mi)
+}
+
+func (x *Volume) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*Volume) ProtoMessage() {}
+
+func (x *Volume) ProtoReflect() protoreflect.Message {
+	mi := &file_osac_private_v1_volume_type_proto_msgTypes[2]
+	if x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+func (x *Volume) GetId() string {
+	if x != nil {
+		return x.Id
+	}
+	return ""
+}
+
+func (x *Volume) GetMetadata() *Metadata {
+	if x != nil {
+		return x.Metadata
+	}
+	return nil
+}
+
+func (x *Volume) GetSpec() *VolumeSpec {
+	if x != nil {
+		return x.Spec
+	}
+	return nil
+}
+
+func (x *Volume) GetStatus() *VolumeStatus {
+	if x != nil {
+		return x.Status
+	}
+	return nil
+}
+
+func (x *Volume) SetId(v string) {
+	x.Id = v
+}
+
+func (x *Volume) SetMetadata(v *Metadata) {
+	x.Metadata = v
+}
+
+func (x *Volume) SetSpec(v *VolumeSpec) {
+	x.Spec = v
+}
+
+func (x *Volume) SetStatus(v *VolumeStatus) {
+	x.Status = v
+}
+
+func (x *Volume) HasMetadata() bool {
+	if x == nil {
+		return false
+	}
+	return x.Metadata != nil
+}
+
+func (x *Volume) HasSpec() bool {
+	if x == nil {
+		return false
+	}
+	return x.Spec != nil
+}
+
+func (x *Volume) HasStatus() bool {
+	if x == nil {
+		return false
+	}
+	return x.Status != nil
+}
+
+func (x *Volume) ClearMetadata() {
+	x.Metadata = nil
+}
+
+func (x *Volume) ClearSpec() {
+	x.Spec = nil
+}
+
+func (x *Volume) ClearStatus() {
+	x.Status = nil
+}
+
+type Volume_builder struct {
+	_ [0]func() // Prevents comparability and use of unkeyed literals for the builder.
+
+	// Unique identifier of the volume.
+	Id string
+	// Metadata of the volume.
+	Metadata *Metadata
+	// Desired configuration of the volume (immutable after creation).
+	Spec *VolumeSpec
+	// Current operational status of the volume.
+	Status *VolumeStatus
+}
+
+func (b0 Volume_builder) Build() *Volume {
+	m0 := &Volume{}
+	b, x := &b0, m0
+	_, _ = b, x
+	x.Id = b.Id
+	x.Metadata = b.Metadata
+	x.Spec = b.Spec
+	x.Status = b.Status
+	return m0
+}
+
+// Defines the desired configuration for a Volume. All fields are immutable after creation.
+type VolumeSpec struct {
+	state protoimpl.MessageState `protogen:"hybrid.v1"`
+	// Name of the StorageTier that determines which backend and protocol serve this volume.
+	StorageTier string `protobuf:"bytes,1,opt,name=storage_tier,json=storageTier,proto3" json:"storage_tier,omitempty"`
+	// Requested storage capacity in gibibytes (GiB).
+	SizeGib int64 `protobuf:"varint,2,opt,name=size_gib,json=sizeGib,proto3" json:"size_gib,omitempty"`
+	// Kubernetes access mode for the volume.
+	AccessMode VolumeAccessMode `protobuf:"varint,3,opt,name=access_mode,json=accessMode,proto3,enum=osac.private.v1.VolumeAccessMode" json:"access_mode,omitempty"`
+	// Reference to the PVC that triggered this volume creation. Set by the CSI driver.
+	// Empty for API-driven volume creation.
+	PvcRef        *PVCReference `protobuf:"bytes,4,opt,name=pvc_ref,json=pvcRef,proto3" json:"pvc_ref,omitempty"`
+	unknownFields protoimpl.UnknownFields
+	sizeCache     protoimpl.SizeCache
+}
+
+func (x *VolumeSpec) Reset() {
+	*x = VolumeSpec{}
+	mi := &file_osac_private_v1_volume_type_proto_msgTypes[3]
+	ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+	ms.StoreMessageInfo(mi)
+}
+
+func (x *VolumeSpec) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*VolumeSpec) ProtoMessage() {}
+
+func (x *VolumeSpec) ProtoReflect() protoreflect.Message {
+	mi := &file_osac_private_v1_volume_type_proto_msgTypes[3]
+	if x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+func (x *VolumeSpec) GetStorageTier() string {
+	if x != nil {
+		return x.StorageTier
+	}
+	return ""
+}
+
+func (x *VolumeSpec) GetSizeGib() int64 {
+	if x != nil {
+		return x.SizeGib
+	}
+	return 0
+}
+
+func (x *VolumeSpec) GetAccessMode() VolumeAccessMode {
+	if x != nil {
+		return x.AccessMode
+	}
+	return VolumeAccessMode_VOLUME_ACCESS_MODE_UNSPECIFIED
+}
+
+func (x *VolumeSpec) GetPvcRef() *PVCReference {
+	if x != nil {
+		return x.PvcRef
+	}
+	return nil
+}
+
+func (x *VolumeSpec) SetStorageTier(v string) {
+	x.StorageTier = v
+}
+
+func (x *VolumeSpec) SetSizeGib(v int64) {
+	x.SizeGib = v
+}
+
+func (x *VolumeSpec) SetAccessMode(v VolumeAccessMode) {
+	x.AccessMode = v
+}
+
+func (x *VolumeSpec) SetPvcRef(v *PVCReference) {
+	x.PvcRef = v
+}
+
+func (x *VolumeSpec) HasPvcRef() bool {
+	if x == nil {
+		return false
+	}
+	return x.PvcRef != nil
+}
+
+func (x *VolumeSpec) ClearPvcRef() {
+	x.PvcRef = nil
+}
+
+type VolumeSpec_builder struct {
+	_ [0]func() // Prevents comparability and use of unkeyed literals for the builder.
+
+	// Name of the StorageTier that determines which backend and protocol serve this volume.
+	StorageTier string
+	// Requested storage capacity in gibibytes (GiB).
+	SizeGib int64
+	// Kubernetes access mode for the volume.
+	AccessMode VolumeAccessMode
+	// Reference to the PVC that triggered this volume creation. Set by the CSI driver.
+	// Empty for API-driven volume creation.
+	PvcRef *PVCReference
+}
+
+func (b0 VolumeSpec_builder) Build() *VolumeSpec {
+	m0 := &VolumeSpec{}
+	b, x := &b0, m0
+	_, _ = b, x
+	x.StorageTier = b.StorageTier
+	x.SizeGib = b.SizeGib
+	x.AccessMode = b.AccessMode
+	x.PvcRef = b.PvcRef
+	return m0
+}
+
+// Represents the current operational state of a Volume.
+type VolumeStatus struct {
+	state protoimpl.MessageState `protogen:"hybrid.v1"`
+	// Current lifecycle state of the volume.
+	State VolumeState `protobuf:"varint,1,opt,name=state,proto3,enum=osac.private.v1.VolumeState" json:"state,omitempty"`
+	// Human-readable message providing additional details about the current state.
+	Message *string `protobuf:"bytes,2,opt,name=message,proto3,oneof" json:"message,omitempty"`
+	// Opaque identifier assigned by the vendor storage array. Set by the osac-operator after vendor
+	// CSI CreateVolume succeeds.
+	VendorVolumeId string `protobuf:"bytes,3,opt,name=vendor_volume_id,json=vendorVolumeId,proto3" json:"vendor_volume_id,omitempty"`
+	// Name of the StorageBackend that serves this volume. Resolved during tier resolution at
+	// creation time. Visible only through the private API.
+	Backend string `protobuf:"bytes,4,opt,name=backend,proto3" json:"backend,omitempty"`
+	// Storage protocol used for this volume. Resolved during tier resolution at creation time.
+	// Visible only through the private API.
+	Protocol StorageProtocol `protobuf:"varint,5,opt,name=protocol,proto3,enum=osac.private.v1.StorageProtocol" json:"protocol,omitempty"`
+	// Identifier of the hub cluster where the Volume CR is created. Set by the fulfillment-service
+	// reconciler when selecting the hub. Used to look up the hub connection during delete.
+	Hub string `protobuf:"bytes,6,opt,name=hub,proto3" json:"hub,omitempty"`
+	// Operator-confirmed reference to the PVC on the tenant cluster.
+	PvcRef *PVCReference `protobuf:"bytes,7,opt,name=pvc_ref,json=pvcRef,proto3" json:"pvc_ref,omitempty"`
+	// Reference to the PV created for this volume on the tenant cluster.
+	PvRef         *PVReference `protobuf:"bytes,8,opt,name=pv_ref,json=pvRef,proto3" json:"pv_ref,omitempty"`
+	unknownFields protoimpl.UnknownFields
+	sizeCache     protoimpl.SizeCache
+}
+
+func (x *VolumeStatus) Reset() {
+	*x = VolumeStatus{}
+	mi := &file_osac_private_v1_volume_type_proto_msgTypes[4]
+	ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+	ms.StoreMessageInfo(mi)
+}
+
+func (x *VolumeStatus) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*VolumeStatus) ProtoMessage() {}
+
+func (x *VolumeStatus) ProtoReflect() protoreflect.Message {
+	mi := &file_osac_private_v1_volume_type_proto_msgTypes[4]
+	if x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+func (x *VolumeStatus) GetState() VolumeState {
+	if x != nil {
+		return x.State
+	}
+	return VolumeState_VOLUME_STATE_UNSPECIFIED
+}
+
+func (x *VolumeStatus) GetMessage() string {
+	if x != nil && x.Message != nil {
+		return *x.Message
+	}
+	return ""
+}
+
+func (x *VolumeStatus) GetVendorVolumeId() string {
+	if x != nil {
+		return x.VendorVolumeId
+	}
+	return ""
+}
+
+func (x *VolumeStatus) GetBackend() string {
+	if x != nil {
+		return x.Backend
+	}
+	return ""
+}
+
+func (x *VolumeStatus) GetProtocol() StorageProtocol {
+	if x != nil {
+		return x.Protocol
+	}
+	return StorageProtocol_STORAGE_PROTOCOL_UNSPECIFIED
+}
+
+func (x *VolumeStatus) GetHub() string {
+	if x != nil {
+		return x.Hub
+	}
+	return ""
+}
+
+func (x *VolumeStatus) GetPvcRef() *PVCReference {
+	if x != nil {
+		return x.PvcRef
+	}
+	return nil
+}
+
+func (x *VolumeStatus) GetPvRef() *PVReference {
+	if x != nil {
+		return x.PvRef
+	}
+	return nil
+}
+
+func (x *VolumeStatus) SetState(v VolumeState) {
+	x.State = v
+}
+
+func (x *VolumeStatus) SetMessage(v string) {
+	x.Message = &v
+}
+
+func (x *VolumeStatus) SetVendorVolumeId(v string) {
+	x.VendorVolumeId = v
+}
+
+func (x *VolumeStatus) SetBackend(v string) {
+	x.Backend = v
+}
+
+func (x *VolumeStatus) SetProtocol(v StorageProtocol) {
+	x.Protocol = v
+}
+
+func (x *VolumeStatus) SetHub(v string) {
+	x.Hub = v
+}
+
+func (x *VolumeStatus) SetPvcRef(v *PVCReference) {
+	x.PvcRef = v
+}
+
+func (x *VolumeStatus) SetPvRef(v *PVReference) {
+	x.PvRef = v
+}
+
+func (x *VolumeStatus) HasMessage() bool {
+	if x == nil {
+		return false
+	}
+	return x.Message != nil
+}
+
+func (x *VolumeStatus) HasPvcRef() bool {
+	if x == nil {
+		return false
+	}
+	return x.PvcRef != nil
+}
+
+func (x *VolumeStatus) HasPvRef() bool {
+	if x == nil {
+		return false
+	}
+	return x.PvRef != nil
+}
+
+func (x *VolumeStatus) ClearMessage() {
+	x.Message = nil
+}
+
+func (x *VolumeStatus) ClearPvcRef() {
+	x.PvcRef = nil
+}
+
+func (x *VolumeStatus) ClearPvRef() {
+	x.PvRef = nil
+}
+
+type VolumeStatus_builder struct {
+	_ [0]func() // Prevents comparability and use of unkeyed literals for the builder.
+
+	// Current lifecycle state of the volume.
+	State VolumeState
+	// Human-readable message providing additional details about the current state.
+	Message *string
+	// Opaque identifier assigned by the vendor storage array. Set by the osac-operator after vendor
+	// CSI CreateVolume succeeds.
+	VendorVolumeId string
+	// Name of the StorageBackend that serves this volume. Resolved during tier resolution at
+	// creation time. Visible only through the private API.
+	Backend string
+	// Storage protocol used for this volume. Resolved during tier resolution at creation time.
+	// Visible only through the private API.
+	Protocol StorageProtocol
+	// Identifier of the hub cluster where the Volume CR is created. Set by the fulfillment-service
+	// reconciler when selecting the hub. Used to look up the hub connection during delete.
+	Hub string
+	// Operator-confirmed reference to the PVC on the tenant cluster.
+	PvcRef *PVCReference
+	// Reference to the PV created for this volume on the tenant cluster.
+	PvRef *PVReference
+}
+
+func (b0 VolumeStatus_builder) Build() *VolumeStatus {
+	m0 := &VolumeStatus{}
+	b, x := &b0, m0
+	_, _ = b, x
+	x.State = b.State
+	x.Message = b.Message
+	x.VendorVolumeId = b.VendorVolumeId
+	x.Backend = b.Backend
+	x.Protocol = b.Protocol
+	x.Hub = b.Hub
+	x.PvcRef = b.PvcRef
+	x.PvRef = b.PvRef
+	return m0
+}
+
+var File_osac_private_v1_volume_type_proto protoreflect.FileDescriptor
+
+var file_osac_private_v1_volume_type_proto_rawDesc = string([]byte{
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+	0x74, 0x6f, 0x33,
+})
+
+var file_osac_private_v1_volume_type_proto_enumTypes = make([]protoimpl.EnumInfo, 2)
+var file_osac_private_v1_volume_type_proto_msgTypes = make([]protoimpl.MessageInfo, 5)
+var file_osac_private_v1_volume_type_proto_goTypes = []any{
+	(VolumeAccessMode)(0), // 0: osac.private.v1.VolumeAccessMode
+	(VolumeState)(0),      // 1: osac.private.v1.VolumeState
+	(*PVCReference)(nil),  // 2: osac.private.v1.PVCReference
+	(*PVReference)(nil),   // 3: osac.private.v1.PVReference
+	(*Volume)(nil),        // 4: osac.private.v1.Volume
+	(*VolumeSpec)(nil),    // 5: osac.private.v1.VolumeSpec
+	(*VolumeStatus)(nil),  // 6: osac.private.v1.VolumeStatus
+	(*Metadata)(nil),      // 7: osac.private.v1.Metadata
+	(StorageProtocol)(0),  // 8: osac.private.v1.StorageProtocol
+}
+var file_osac_private_v1_volume_type_proto_depIdxs = []int32{
+	7, // 0: osac.private.v1.Volume.metadata:type_name -> osac.private.v1.Metadata
+	5, // 1: osac.private.v1.Volume.spec:type_name -> osac.private.v1.VolumeSpec
+	6, // 2: osac.private.v1.Volume.status:type_name -> osac.private.v1.VolumeStatus
+	0, // 3: osac.private.v1.VolumeSpec.access_mode:type_name -> osac.private.v1.VolumeAccessMode
+	2, // 4: osac.private.v1.VolumeSpec.pvc_ref:type_name -> osac.private.v1.PVCReference
+	1, // 5: osac.private.v1.VolumeStatus.state:type_name -> osac.private.v1.VolumeState
+	8, // 6: osac.private.v1.VolumeStatus.protocol:type_name -> osac.private.v1.StorageProtocol
+	2, // 7: osac.private.v1.VolumeStatus.pvc_ref:type_name -> osac.private.v1.PVCReference
+	3, // 8: osac.private.v1.VolumeStatus.pv_ref:type_name -> osac.private.v1.PVReference
+	9, // [9:9] is the sub-list for method output_type
+	9, // [9:9] is the sub-list for method input_type
+	9, // [9:9] is the sub-list for extension type_name
+	9, // [9:9] is the sub-list for extension extendee
+	0, // [0:9] is the sub-list for field type_name
+}
+
+func init() { file_osac_private_v1_volume_type_proto_init() }
+func file_osac_private_v1_volume_type_proto_init() {
+	if File_osac_private_v1_volume_type_proto != nil {
+		return
+	}
+	file_osac_private_v1_metadata_type_proto_init()
+	file_osac_private_v1_storage_common_type_proto_init()
+	file_osac_private_v1_volume_type_proto_msgTypes[4].OneofWrappers = []any{}
+	type x struct{}
+	out := protoimpl.TypeBuilder{
+		File: protoimpl.DescBuilder{
+			GoPackagePath: reflect.TypeOf(x{}).PkgPath(),
+			RawDescriptor: unsafe.Slice(unsafe.StringData(file_osac_private_v1_volume_type_proto_rawDesc), len(file_osac_private_v1_volume_type_proto_rawDesc)),
+			NumEnums:      2,
+			NumMessages:   5,
+			NumExtensions: 0,
+			NumServices:   0,
+		},
+		GoTypes:           file_osac_private_v1_volume_type_proto_goTypes,
+		DependencyIndexes: file_osac_private_v1_volume_type_proto_depIdxs,
+		EnumInfos:         file_osac_private_v1_volume_type_proto_enumTypes,
+		MessageInfos:      file_osac_private_v1_volume_type_proto_msgTypes,
+	}.Build()
+	File_osac_private_v1_volume_type_proto = out.File
+	file_osac_private_v1_volume_type_proto_goTypes = nil
+	file_osac_private_v1_volume_type_proto_depIdxs = nil
+}
diff --git a/fulfillment-service/internal/api/osac/private/v1/volume_type_protoopaque.pb.go b/fulfillment-service/internal/api/osac/private/v1/volume_type_protoopaque.pb.go
new file mode 100644
index 000000000..24b313ead
--- /dev/null
+++ b/fulfillment-service/internal/api/osac/private/v1/volume_type_protoopaque.pb.go
@@ -0,0 +1,963 @@
+//
+// Copyright (c) 2026 Red Hat, Inc.
+//
+// Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with
+// the License. You may obtain a copy of the License at
+//
+//   http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on
+// an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the
+// specific language governing permissions and limitations under the License.
+//
+
+// Code generated by protoc-gen-go. DO NOT EDIT.
+// versions:
+// 	protoc-gen-go v1.36.5
+// 	protoc        (unknown)
+// source: osac/private/v1/volume_type.proto
+
+//go:build protoopaque
+
+package privatev1
+
+import (
+	_ "buf.build/gen/go/bufbuild/protovalidate/protocolbuffers/go/buf/validate"
+	protoreflect "google.golang.org/protobuf/reflect/protoreflect"
+	protoimpl "google.golang.org/protobuf/runtime/protoimpl"
+	reflect "reflect"
+	unsafe "unsafe"
+)
+
+const (
+	// Verify that this generated code is sufficiently up-to-date.
+	_ = protoimpl.EnforceVersion(20 - protoimpl.MinVersion)
+	// Verify that runtime/protoimpl is sufficiently up-to-date.
+	_ = protoimpl.EnforceVersion(protoimpl.MaxVersion - 20)
+)
+
+// Access modes for Volume resources, matching Kubernetes PersistentVolume access modes.
+// https://kubernetes.io/docs/concepts/storage/persistent-volumes/#access-modes
+type VolumeAccessMode int32
+
+const (
+	// Access mode is unknown or has not been specified.
+	VolumeAccessMode_VOLUME_ACCESS_MODE_UNSPECIFIED VolumeAccessMode = 0
+	// The volume can be mounted as read-write by a single node.
+	VolumeAccessMode_VOLUME_ACCESS_MODE_READ_WRITE_ONCE VolumeAccessMode = 1
+	// The volume can be mounted as read-only by many nodes.
+	VolumeAccessMode_VOLUME_ACCESS_MODE_READ_ONLY_MANY VolumeAccessMode = 2
+	// The volume can be mounted as read-write by many nodes.
+	VolumeAccessMode_VOLUME_ACCESS_MODE_READ_WRITE_MANY VolumeAccessMode = 3
+	// The volume can be mounted as read-write by a single pod (requires CSI 1.5+).
+	VolumeAccessMode_VOLUME_ACCESS_MODE_READ_WRITE_ONCE_POD VolumeAccessMode = 4
+)
+
+// Enum value maps for VolumeAccessMode.
+var (
+	VolumeAccessMode_name = map[int32]string{
+		0: "VOLUME_ACCESS_MODE_UNSPECIFIED",
+		1: "VOLUME_ACCESS_MODE_READ_WRITE_ONCE",
+		2: "VOLUME_ACCESS_MODE_READ_ONLY_MANY",
+		3: "VOLUME_ACCESS_MODE_READ_WRITE_MANY",
+		4: "VOLUME_ACCESS_MODE_READ_WRITE_ONCE_POD",
+	}
+	VolumeAccessMode_value = map[string]int32{
+		"VOLUME_ACCESS_MODE_UNSPECIFIED":         0,
+		"VOLUME_ACCESS_MODE_READ_WRITE_ONCE":     1,
+		"VOLUME_ACCESS_MODE_READ_ONLY_MANY":      2,
+		"VOLUME_ACCESS_MODE_READ_WRITE_MANY":     3,
+		"VOLUME_ACCESS_MODE_READ_WRITE_ONCE_POD": 4,
+	}
+)
+
+func (x VolumeAccessMode) Enum() *VolumeAccessMode {
+	p := new(VolumeAccessMode)
+	*p = x
+	return p
+}
+
+func (x VolumeAccessMode) String() string {
+	return protoimpl.X.EnumStringOf(x.Descriptor(), protoreflect.EnumNumber(x))
+}
+
+func (VolumeAccessMode) Descriptor() protoreflect.EnumDescriptor {
+	return file_osac_private_v1_volume_type_proto_enumTypes[0].Descriptor()
+}
+
+func (VolumeAccessMode) Type() protoreflect.EnumType {
+	return &file_osac_private_v1_volume_type_proto_enumTypes[0]
+}
+
+func (x VolumeAccessMode) Number() protoreflect.EnumNumber {
+	return protoreflect.EnumNumber(x)
+}
+
+// Lifecycle states for Volume resources.
+type VolumeState int32
+
+const (
+	// State is unknown or has not been determined yet.
+	VolumeState_VOLUME_STATE_UNSPECIFIED VolumeState = 0
+	// The volume is being provisioned on the storage backend.
+	VolumeState_VOLUME_STATE_CREATING VolumeState = 1
+	// The volume has been provisioned and is ready for use.
+	VolumeState_VOLUME_STATE_AVAILABLE VolumeState = 2
+	// The volume provisioning has permanently failed after max retries and requires admin intervention.
+	VolumeState_VOLUME_STATE_FAILED VolumeState = 3
+	// The volume is being deprovisioned from the storage backend.
+	VolumeState_VOLUME_STATE_DELETING VolumeState = 4
+	// The volume has been fully deprovisioned and the record is archived.
+	VolumeState_VOLUME_STATE_DELETED VolumeState = 5
+)
+
+// Enum value maps for VolumeState.
+var (
+	VolumeState_name = map[int32]string{
+		0: "VOLUME_STATE_UNSPECIFIED",
+		1: "VOLUME_STATE_CREATING",
+		2: "VOLUME_STATE_AVAILABLE",
+		3: "VOLUME_STATE_FAILED",
+		4: "VOLUME_STATE_DELETING",
+		5: "VOLUME_STATE_DELETED",
+	}
+	VolumeState_value = map[string]int32{
+		"VOLUME_STATE_UNSPECIFIED": 0,
+		"VOLUME_STATE_CREATING":    1,
+		"VOLUME_STATE_AVAILABLE":   2,
+		"VOLUME_STATE_FAILED":      3,
+		"VOLUME_STATE_DELETING":    4,
+		"VOLUME_STATE_DELETED":     5,
+	}
+)
+
+func (x VolumeState) Enum() *VolumeState {
+	p := new(VolumeState)
+	*p = x
+	return p
+}
+
+func (x VolumeState) String() string {
+	return protoimpl.X.EnumStringOf(x.Descriptor(), protoreflect.EnumNumber(x))
+}
+
+func (VolumeState) Descriptor() protoreflect.EnumDescriptor {
+	return file_osac_private_v1_volume_type_proto_enumTypes[1].Descriptor()
+}
+
+func (VolumeState) Type() protoreflect.EnumType {
+	return &file_osac_private_v1_volume_type_proto_enumTypes[1]
+}
+
+func (x VolumeState) Number() protoreflect.EnumNumber {
+	return protoreflect.EnumNumber(x)
+}
+
+// Identifies the PVC that triggered the volume creation.
+type PVCReference struct {
+	state                protoimpl.MessageState `protogen:"opaque.v1"`
+	xxx_hidden_Name      string                 `protobuf:"bytes,1,opt,name=name,proto3"`
+	xxx_hidden_Namespace string                 `protobuf:"bytes,2,opt,name=namespace,proto3"`
+	xxx_hidden_Cluster   string                 `protobuf:"bytes,3,opt,name=cluster,proto3"`
+	unknownFields        protoimpl.UnknownFields
+	sizeCache            protoimpl.SizeCache
+}
+
+func (x *PVCReference) Reset() {
+	*x = PVCReference{}
+	mi := &file_osac_private_v1_volume_type_proto_msgTypes[0]
+	ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+	ms.StoreMessageInfo(mi)
+}
+
+func (x *PVCReference) String() string {
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+	// Namespace of the PersistentVolumeClaim.
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+	// Opaque identifier assigned by the vendor storage array. Set by the osac-operator after vendor
+	// CSI CreateVolume succeeds.
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+	0x74, 0x6f, 0x33,
+})
+
+var file_osac_private_v1_volume_type_proto_enumTypes = make([]protoimpl.EnumInfo, 2)
+var file_osac_private_v1_volume_type_proto_msgTypes = make([]protoimpl.MessageInfo, 5)
+var file_osac_private_v1_volume_type_proto_goTypes = []any{
+	(VolumeAccessMode)(0), // 0: osac.private.v1.VolumeAccessMode
+	(VolumeState)(0),      // 1: osac.private.v1.VolumeState
+	(*PVCReference)(nil),  // 2: osac.private.v1.PVCReference
+	(*PVReference)(nil),   // 3: osac.private.v1.PVReference
+	(*Volume)(nil),        // 4: osac.private.v1.Volume
+	(*VolumeSpec)(nil),    // 5: osac.private.v1.VolumeSpec
+	(*VolumeStatus)(nil),  // 6: osac.private.v1.VolumeStatus
+	(*Metadata)(nil),      // 7: osac.private.v1.Metadata
+	(StorageProtocol)(0),  // 8: osac.private.v1.StorageProtocol
+}
+var file_osac_private_v1_volume_type_proto_depIdxs = []int32{
+	7, // 0: osac.private.v1.Volume.metadata:type_name -> osac.private.v1.Metadata
+	5, // 1: osac.private.v1.Volume.spec:type_name -> osac.private.v1.VolumeSpec
+	6, // 2: osac.private.v1.Volume.status:type_name -> osac.private.v1.VolumeStatus
+	0, // 3: osac.private.v1.VolumeSpec.access_mode:type_name -> osac.private.v1.VolumeAccessMode
+	2, // 4: osac.private.v1.VolumeSpec.pvc_ref:type_name -> osac.private.v1.PVCReference
+	1, // 5: osac.private.v1.VolumeStatus.state:type_name -> osac.private.v1.VolumeState
+	8, // 6: osac.private.v1.VolumeStatus.protocol:type_name -> osac.private.v1.StorageProtocol
+	2, // 7: osac.private.v1.VolumeStatus.pvc_ref:type_name -> osac.private.v1.PVCReference
+	3, // 8: osac.private.v1.VolumeStatus.pv_ref:type_name -> osac.private.v1.PVReference
+	9, // [9:9] is the sub-list for method output_type
+	9, // [9:9] is the sub-list for method input_type
+	9, // [9:9] is the sub-list for extension type_name
+	9, // [9:9] is the sub-list for extension extendee
+	0, // [0:9] is the sub-list for field type_name
+}
+
+func init() { file_osac_private_v1_volume_type_proto_init() }
+func file_osac_private_v1_volume_type_proto_init() {
+	if File_osac_private_v1_volume_type_proto != nil {
+		return
+	}
+	file_osac_private_v1_metadata_type_proto_init()
+	file_osac_private_v1_storage_common_type_proto_init()
+	file_osac_private_v1_volume_type_proto_msgTypes[4].OneofWrappers = []any{}
+	type x struct{}
+	out := protoimpl.TypeBuilder{
+		File: protoimpl.DescBuilder{
+			GoPackagePath: reflect.TypeOf(x{}).PkgPath(),
+			RawDescriptor: unsafe.Slice(unsafe.StringData(file_osac_private_v1_volume_type_proto_rawDesc), len(file_osac_private_v1_volume_type_proto_rawDesc)),
+			NumEnums:      2,
+			NumMessages:   5,
+			NumExtensions: 0,
+			NumServices:   0,
+		},
+		GoTypes:           file_osac_private_v1_volume_type_proto_goTypes,
+		DependencyIndexes: file_osac_private_v1_volume_type_proto_depIdxs,
+		EnumInfos:         file_osac_private_v1_volume_type_proto_enumTypes,
+		MessageInfos:      file_osac_private_v1_volume_type_proto_msgTypes,
+	}.Build()
+	File_osac_private_v1_volume_type_proto = out.File
+	file_osac_private_v1_volume_type_proto_goTypes = nil
+	file_osac_private_v1_volume_type_proto_depIdxs = nil
+}
diff --git a/fulfillment-service/internal/api/osac/private/v1/volumes_service.pb.go b/fulfillment-service/internal/api/osac/private/v1/volumes_service.pb.go
new file mode 100644
index 000000000..54f546aa5
--- /dev/null
+++ b/fulfillment-service/internal/api/osac/private/v1/volumes_service.pb.go
@@ -0,0 +1,1174 @@
+//
+// Copyright (c) 2026 Red Hat, Inc.
+//
+// Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with
+// the License. You may obtain a copy of the License at
+//
+//   http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on
+// an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the
+// specific language governing permissions and limitations under the License.
+//
+
+// Code generated by protoc-gen-go. DO NOT EDIT.
+// versions:
+// 	protoc-gen-go v1.36.5
+// 	protoc        (unknown)
+// source: osac/private/v1/volumes_service.proto
+
+//go:build !protoopaque
+
+package privatev1
+
+import (
+	_ "google.golang.org/genproto/googleapis/api/annotations"
+	protoreflect "google.golang.org/protobuf/reflect/protoreflect"
+	protoimpl "google.golang.org/protobuf/runtime/protoimpl"
+	fieldmaskpb "google.golang.org/protobuf/types/known/fieldmaskpb"
+	reflect "reflect"
+	unsafe "unsafe"
+)
+
+const (
+	// Verify that this generated code is sufficiently up-to-date.
+	_ = protoimpl.EnforceVersion(20 - protoimpl.MinVersion)
+	// Verify that runtime/protoimpl is sufficiently up-to-date.
+	_ = protoimpl.EnforceVersion(protoimpl.MaxVersion - 20)
+)
+
+type VolumesListRequest struct {
+	state protoimpl.MessageState `protogen:"hybrid.v1"`
+	// Index of the first result. If not specified the default value will be zero.
+	Offset *int32 `protobuf:"varint,1,opt,name=offset,proto3,oneof" json:"offset,omitempty"`
+	// Maximum number of results to be returned by the server. When not specified all the results will be returned. Note
+	// that there may not be enough results to return, and that the server may decide, for performance reasons, to return
+	// less results than requested.
+	Limit *int32 `protobuf:"varint,2,opt,name=limit,proto3,oneof" json:"limit,omitempty"`
+	// Filter criteria.
+	//
+	// The value of this parameter is a [CEL](https://cel.dev) expression used to select which objects to return. The
+	// built-in `this` variable refers to the object being tested and `now` refers to the current date and time. If the
+	// expression evaluates to `true` the object is included in the results. For example, to retrieve all volumes in the
+	// AVAILABLE state:
+	//
+	//	this.status.state == 2
+	//
+	// If this isn't provided, or if the value is empty, then all the volumes that the user has permission to see will be
+	// returned. Not all CEL constructs are currently supported for implementation reasons; see the filter documentation
+	// (docs/FILTER.md) for the full details.
+	Filter *string `protobuf:"bytes,3,opt,name=filter,proto3,oneof" json:"filter,omitempty"`
+	// Order criteria.
+	//
+	// The syntax of this parameter is similar to the syntax of the _order by_ clause of a SQL statement, but using the
+	// names of the attributes of the volume instead of the names of the columns of a table. For example, in order to
+	// sort the volumes descending by size:
+	//
+	//	spec.size_gib desc
+	//
+	// If the parameter isn't provided, or if the value is empty, then the order of the results is undefined.
+	Order         *string `protobuf:"bytes,4,opt,name=order,proto3,oneof" json:"order,omitempty"`
+	unknownFields protoimpl.UnknownFields
+	sizeCache     protoimpl.SizeCache
+}
+
+func (x *VolumesListRequest) Reset() {
+	*x = VolumesListRequest{}
+	mi := &file_osac_private_v1_volumes_service_proto_msgTypes[0]
+	ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+	ms.StoreMessageInfo(mi)
+}
+
+func (x *VolumesListRequest) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*VolumesListRequest) ProtoMessage() {}
+
+func (x *VolumesListRequest) ProtoReflect() protoreflect.Message {
+	mi := &file_osac_private_v1_volumes_service_proto_msgTypes[0]
+	if x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+func (x *VolumesListRequest) GetOffset() int32 {
+	if x != nil && x.Offset != nil {
+		return *x.Offset
+	}
+	return 0
+}
+
+func (x *VolumesListRequest) GetLimit() int32 {
+	if x != nil && x.Limit != nil {
+		return *x.Limit
+	}
+	return 0
+}
+
+func (x *VolumesListRequest) GetFilter() string {
+	if x != nil && x.Filter != nil {
+		return *x.Filter
+	}
+	return ""
+}
+
+func (x *VolumesListRequest) GetOrder() string {
+	if x != nil && x.Order != nil {
+		return *x.Order
+	}
+	return ""
+}
+
+func (x *VolumesListRequest) SetOffset(v int32) {
+	x.Offset = &v
+}
+
+func (x *VolumesListRequest) SetLimit(v int32) {
+	x.Limit = &v
+}
+
+func (x *VolumesListRequest) SetFilter(v string) {
+	x.Filter = &v
+}
+
+func (x *VolumesListRequest) SetOrder(v string) {
+	x.Order = &v
+}
+
+func (x *VolumesListRequest) HasOffset() bool {
+	if x == nil {
+		return false
+	}
+	return x.Offset != nil
+}
+
+func (x *VolumesListRequest) HasLimit() bool {
+	if x == nil {
+		return false
+	}
+	return x.Limit != nil
+}
+
+func (x *VolumesListRequest) HasFilter() bool {
+	if x == nil {
+		return false
+	}
+	return x.Filter != nil
+}
+
+func (x *VolumesListRequest) HasOrder() bool {
+	if x == nil {
+		return false
+	}
+	return x.Order != nil
+}
+
+func (x *VolumesListRequest) ClearOffset() {
+	x.Offset = nil
+}
+
+func (x *VolumesListRequest) ClearLimit() {
+	x.Limit = nil
+}
+
+func (x *VolumesListRequest) ClearFilter() {
+	x.Filter = nil
+}
+
+func (x *VolumesListRequest) ClearOrder() {
+	x.Order = nil
+}
+
+type VolumesListRequest_builder struct {
+	_ [0]func() // Prevents comparability and use of unkeyed literals for the builder.
+
+	// Index of the first result. If not specified the default value will be zero.
+	Offset *int32
+	// Maximum number of results to be returned by the server. When not specified all the results will be returned. Note
+	// that there may not be enough results to return, and that the server may decide, for performance reasons, to return
+	// less results than requested.
+	Limit *int32
+	// Filter criteria.
+	//
+	// The value of this parameter is a [CEL](https://cel.dev) expression used to select which objects to return. The
+	// built-in `this` variable refers to the object being tested and `now` refers to the current date and time. If the
+	// expression evaluates to `true` the object is included in the results. For example, to retrieve all volumes in the
+	// AVAILABLE state:
+	//
+	//	this.status.state == 2
+	//
+	// If this isn't provided, or if the value is empty, then all the volumes that the user has permission to see will be
+	// returned. Not all CEL constructs are currently supported for implementation reasons; see the filter documentation
+	// (docs/FILTER.md) for the full details.
+	Filter *string
+	// Order criteria.
+	//
+	// The syntax of this parameter is similar to the syntax of the _order by_ clause of a SQL statement, but using the
+	// names of the attributes of the volume instead of the names of the columns of a table. For example, in order to
+	// sort the volumes descending by size:
+	//
+	//	spec.size_gib desc
+	//
+	// If the parameter isn't provided, or if the value is empty, then the order of the results is undefined.
+	Order *string
+}
+
+func (b0 VolumesListRequest_builder) Build() *VolumesListRequest {
+	m0 := &VolumesListRequest{}
+	b, x := &b0, m0
+	_, _ = b, x
+	x.Offset = b.Offset
+	x.Limit = b.Limit
+	x.Filter = b.Filter
+	x.Order = b.Order
+	return m0
+}
+
+type VolumesListResponse struct {
+	state protoimpl.MessageState `protogen:"hybrid.v1"`
+	// Actual number of items returned. Note that this may be smaller than the value requested in the `limit` parameter
+	// of the request if there are not enough items, or if the system decides that returning that number of items isn't
+	// feasible or convenient for performance reasons.
+	Size int32 `protobuf:"varint,1,opt,name=size,proto3" json:"size,omitempty"`
+	// Total number of items of the collection that match the search criteria, regardless of the number of results
+	// requested with the `limit` parameter.
+	Total int32 `protobuf:"varint,2,opt,name=total,proto3" json:"total,omitempty"`
+	// List of results.
+	Items         []*Volume `protobuf:"bytes,3,rep,name=items,proto3" json:"items,omitempty"`
+	unknownFields protoimpl.UnknownFields
+	sizeCache     protoimpl.SizeCache
+}
+
+func (x *VolumesListResponse) Reset() {
+	*x = VolumesListResponse{}
+	mi := &file_osac_private_v1_volumes_service_proto_msgTypes[1]
+	ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+	ms.StoreMessageInfo(mi)
+}
+
+func (x *VolumesListResponse) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*VolumesListResponse) ProtoMessage() {}
+
+func (x *VolumesListResponse) ProtoReflect() protoreflect.Message {
+	mi := &file_osac_private_v1_volumes_service_proto_msgTypes[1]
+	if x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+func (x *VolumesListResponse) GetSize() int32 {
+	if x != nil {
+		return x.Size
+	}
+	return 0
+}
+
+func (x *VolumesListResponse) GetTotal() int32 {
+	if x != nil {
+		return x.Total
+	}
+	return 0
+}
+
+func (x *VolumesListResponse) GetItems() []*Volume {
+	if x != nil {
+		return x.Items
+	}
+	return nil
+}
+
+func (x *VolumesListResponse) SetSize(v int32) {
+	x.Size = v
+}
+
+func (x *VolumesListResponse) SetTotal(v int32) {
+	x.Total = v
+}
+
+func (x *VolumesListResponse) SetItems(v []*Volume) {
+	x.Items = v
+}
+
+type VolumesListResponse_builder struct {
+	_ [0]func() // Prevents comparability and use of unkeyed literals for the builder.
+
+	// Actual number of items returned. Note that this may be smaller than the value requested in the `limit` parameter
+	// of the request if there are not enough items, or if the system decides that returning that number of items isn't
+	// feasible or convenient for performance reasons.
+	Size int32
+	// Total number of items of the collection that match the search criteria, regardless of the number of results
+	// requested with the `limit` parameter.
+	Total int32
+	// List of results.
+	Items []*Volume
+}
+
+func (b0 VolumesListResponse_builder) Build() *VolumesListResponse {
+	m0 := &VolumesListResponse{}
+	b, x := &b0, m0
+	_, _ = b, x
+	x.Size = b.Size
+	x.Total = b.Total
+	x.Items = b.Items
+	return m0
+}
+
+type VolumesGetRequest struct {
+	state         protoimpl.MessageState `protogen:"hybrid.v1"`
+	Id            string                 `protobuf:"bytes,1,opt,name=id,proto3" json:"id,omitempty"`
+	unknownFields protoimpl.UnknownFields
+	sizeCache     protoimpl.SizeCache
+}
+
+func (x *VolumesGetRequest) Reset() {
+	*x = VolumesGetRequest{}
+	mi := &file_osac_private_v1_volumes_service_proto_msgTypes[2]
+	ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+	ms.StoreMessageInfo(mi)
+}
+
+func (x *VolumesGetRequest) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*VolumesGetRequest) ProtoMessage() {}
+
+func (x *VolumesGetRequest) ProtoReflect() protoreflect.Message {
+	mi := &file_osac_private_v1_volumes_service_proto_msgTypes[2]
+	if x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+func (x *VolumesGetRequest) GetId() string {
+	if x != nil {
+		return x.Id
+	}
+	return ""
+}
+
+func (x *VolumesGetRequest) SetId(v string) {
+	x.Id = v
+}
+
+type VolumesGetRequest_builder struct {
+	_ [0]func() // Prevents comparability and use of unkeyed literals for the builder.
+
+	Id string
+}
+
+func (b0 VolumesGetRequest_builder) Build() *VolumesGetRequest {
+	m0 := &VolumesGetRequest{}
+	b, x := &b0, m0
+	_, _ = b, x
+	x.Id = b.Id
+	return m0
+}
+
+type VolumesGetResponse struct {
+	state         protoimpl.MessageState `protogen:"hybrid.v1"`
+	Object        *Volume                `protobuf:"bytes,1,opt,name=object,proto3" json:"object,omitempty"`
+	unknownFields protoimpl.UnknownFields
+	sizeCache     protoimpl.SizeCache
+}
+
+func (x *VolumesGetResponse) Reset() {
+	*x = VolumesGetResponse{}
+	mi := &file_osac_private_v1_volumes_service_proto_msgTypes[3]
+	ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+	ms.StoreMessageInfo(mi)
+}
+
+func (x *VolumesGetResponse) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*VolumesGetResponse) ProtoMessage() {}
+
+func (x *VolumesGetResponse) ProtoReflect() protoreflect.Message {
+	mi := &file_osac_private_v1_volumes_service_proto_msgTypes[3]
+	if x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+func (x *VolumesGetResponse) GetObject() *Volume {
+	if x != nil {
+		return x.Object
+	}
+	return nil
+}
+
+func (x *VolumesGetResponse) SetObject(v *Volume) {
+	x.Object = v
+}
+
+func (x *VolumesGetResponse) HasObject() bool {
+	if x == nil {
+		return false
+	}
+	return x.Object != nil
+}
+
+func (x *VolumesGetResponse) ClearObject() {
+	x.Object = nil
+}
+
+type VolumesGetResponse_builder struct {
+	_ [0]func() // Prevents comparability and use of unkeyed literals for the builder.
+
+	Object *Volume
+}
+
+func (b0 VolumesGetResponse_builder) Build() *VolumesGetResponse {
+	m0 := &VolumesGetResponse{}
+	b, x := &b0, m0
+	_, _ = b, x
+	x.Object = b.Object
+	return m0
+}
+
+type VolumesCreateRequest struct {
+	state         protoimpl.MessageState `protogen:"hybrid.v1"`
+	Object        *Volume                `protobuf:"bytes,1,opt,name=object,proto3" json:"object,omitempty"`
+	unknownFields protoimpl.UnknownFields
+	sizeCache     protoimpl.SizeCache
+}
+
+func (x *VolumesCreateRequest) Reset() {
+	*x = VolumesCreateRequest{}
+	mi := &file_osac_private_v1_volumes_service_proto_msgTypes[4]
+	ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+	ms.StoreMessageInfo(mi)
+}
+
+func (x *VolumesCreateRequest) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*VolumesCreateRequest) ProtoMessage() {}
+
+func (x *VolumesCreateRequest) ProtoReflect() protoreflect.Message {
+	mi := &file_osac_private_v1_volumes_service_proto_msgTypes[4]
+	if x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+func (x *VolumesCreateRequest) GetObject() *Volume {
+	if x != nil {
+		return x.Object
+	}
+	return nil
+}
+
+func (x *VolumesCreateRequest) SetObject(v *Volume) {
+	x.Object = v
+}
+
+func (x *VolumesCreateRequest) HasObject() bool {
+	if x == nil {
+		return false
+	}
+	return x.Object != nil
+}
+
+func (x *VolumesCreateRequest) ClearObject() {
+	x.Object = nil
+}
+
+type VolumesCreateRequest_builder struct {
+	_ [0]func() // Prevents comparability and use of unkeyed literals for the builder.
+
+	Object *Volume
+}
+
+func (b0 VolumesCreateRequest_builder) Build() *VolumesCreateRequest {
+	m0 := &VolumesCreateRequest{}
+	b, x := &b0, m0
+	_, _ = b, x
+	x.Object = b.Object
+	return m0
+}
+
+type VolumesCreateResponse struct {
+	state         protoimpl.MessageState `protogen:"hybrid.v1"`
+	Object        *Volume                `protobuf:"bytes,1,opt,name=object,proto3" json:"object,omitempty"`
+	unknownFields protoimpl.UnknownFields
+	sizeCache     protoimpl.SizeCache
+}
+
+func (x *VolumesCreateResponse) Reset() {
+	*x = VolumesCreateResponse{}
+	mi := &file_osac_private_v1_volumes_service_proto_msgTypes[5]
+	ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+	ms.StoreMessageInfo(mi)
+}
+
+func (x *VolumesCreateResponse) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*VolumesCreateResponse) ProtoMessage() {}
+
+func (x *VolumesCreateResponse) ProtoReflect() protoreflect.Message {
+	mi := &file_osac_private_v1_volumes_service_proto_msgTypes[5]
+	if x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+func (x *VolumesCreateResponse) GetObject() *Volume {
+	if x != nil {
+		return x.Object
+	}
+	return nil
+}
+
+func (x *VolumesCreateResponse) SetObject(v *Volume) {
+	x.Object = v
+}
+
+func (x *VolumesCreateResponse) HasObject() bool {
+	if x == nil {
+		return false
+	}
+	return x.Object != nil
+}
+
+func (x *VolumesCreateResponse) ClearObject() {
+	x.Object = nil
+}
+
+type VolumesCreateResponse_builder struct {
+	_ [0]func() // Prevents comparability and use of unkeyed literals for the builder.
+
+	Object *Volume
+}
+
+func (b0 VolumesCreateResponse_builder) Build() *VolumesCreateResponse {
+	m0 := &VolumesCreateResponse{}
+	b, x := &b0, m0
+	_, _ = b, x
+	x.Object = b.Object
+	return m0
+}
+
+type VolumesUpdateRequest struct {
+	state      protoimpl.MessageState `protogen:"hybrid.v1"`
+	Object     *Volume                `protobuf:"bytes,1,opt,name=object,proto3" json:"object,omitempty"`
+	UpdateMask *fieldmaskpb.FieldMask `protobuf:"bytes,2,opt,name=update_mask,json=updateMask,proto3" json:"update_mask,omitempty"`
+	// Lock enables optimistic locking. When set to true, the server verifies that the current version of the object
+	// matches the value of the metadata.version field of the submitted object. If they differ the update will be
+	// rejected. This is useful to prevent lost updates when multiple clients are modifying the same object concurrently.
+	Lock          bool `protobuf:"varint,3,opt,name=lock,proto3" json:"lock,omitempty"`
+	unknownFields protoimpl.UnknownFields
+	sizeCache     protoimpl.SizeCache
+}
+
+func (x *VolumesUpdateRequest) Reset() {
+	*x = VolumesUpdateRequest{}
+	mi := &file_osac_private_v1_volumes_service_proto_msgTypes[6]
+	ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+	ms.StoreMessageInfo(mi)
+}
+
+func (x *VolumesUpdateRequest) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*VolumesUpdateRequest) ProtoMessage() {}
+
+func (x *VolumesUpdateRequest) ProtoReflect() protoreflect.Message {
+	mi := &file_osac_private_v1_volumes_service_proto_msgTypes[6]
+	if x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+func (x *VolumesUpdateRequest) GetObject() *Volume {
+	if x != nil {
+		return x.Object
+	}
+	return nil
+}
+
+func (x *VolumesUpdateRequest) GetUpdateMask() *fieldmaskpb.FieldMask {
+	if x != nil {
+		return x.UpdateMask
+	}
+	return nil
+}
+
+func (x *VolumesUpdateRequest) GetLock() bool {
+	if x != nil {
+		return x.Lock
+	}
+	return false
+}
+
+func (x *VolumesUpdateRequest) SetObject(v *Volume) {
+	x.Object = v
+}
+
+func (x *VolumesUpdateRequest) SetUpdateMask(v *fieldmaskpb.FieldMask) {
+	x.UpdateMask = v
+}
+
+func (x *VolumesUpdateRequest) SetLock(v bool) {
+	x.Lock = v
+}
+
+func (x *VolumesUpdateRequest) HasObject() bool {
+	if x == nil {
+		return false
+	}
+	return x.Object != nil
+}
+
+func (x *VolumesUpdateRequest) HasUpdateMask() bool {
+	if x == nil {
+		return false
+	}
+	return x.UpdateMask != nil
+}
+
+func (x *VolumesUpdateRequest) ClearObject() {
+	x.Object = nil
+}
+
+func (x *VolumesUpdateRequest) ClearUpdateMask() {
+	x.UpdateMask = nil
+}
+
+type VolumesUpdateRequest_builder struct {
+	_ [0]func() // Prevents comparability and use of unkeyed literals for the builder.
+
+	Object     *Volume
+	UpdateMask *fieldmaskpb.FieldMask
+	// Lock enables optimistic locking. When set to true, the server verifies that the current version of the object
+	// matches the value of the metadata.version field of the submitted object. If they differ the update will be
+	// rejected. This is useful to prevent lost updates when multiple clients are modifying the same object concurrently.
+	Lock bool
+}
+
+func (b0 VolumesUpdateRequest_builder) Build() *VolumesUpdateRequest {
+	m0 := &VolumesUpdateRequest{}
+	b, x := &b0, m0
+	_, _ = b, x
+	x.Object = b.Object
+	x.UpdateMask = b.UpdateMask
+	x.Lock = b.Lock
+	return m0
+}
+
+type VolumesUpdateResponse struct {
+	state         protoimpl.MessageState `protogen:"hybrid.v1"`
+	Object        *Volume                `protobuf:"bytes,1,opt,name=object,proto3" json:"object,omitempty"`
+	unknownFields protoimpl.UnknownFields
+	sizeCache     protoimpl.SizeCache
+}
+
+func (x *VolumesUpdateResponse) Reset() {
+	*x = VolumesUpdateResponse{}
+	mi := &file_osac_private_v1_volumes_service_proto_msgTypes[7]
+	ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+	ms.StoreMessageInfo(mi)
+}
+
+func (x *VolumesUpdateResponse) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*VolumesUpdateResponse) ProtoMessage() {}
+
+func (x *VolumesUpdateResponse) ProtoReflect() protoreflect.Message {
+	mi := &file_osac_private_v1_volumes_service_proto_msgTypes[7]
+	if x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+func (x *VolumesUpdateResponse) GetObject() *Volume {
+	if x != nil {
+		return x.Object
+	}
+	return nil
+}
+
+func (x *VolumesUpdateResponse) SetObject(v *Volume) {
+	x.Object = v
+}
+
+func (x *VolumesUpdateResponse) HasObject() bool {
+	if x == nil {
+		return false
+	}
+	return x.Object != nil
+}
+
+func (x *VolumesUpdateResponse) ClearObject() {
+	x.Object = nil
+}
+
+type VolumesUpdateResponse_builder struct {
+	_ [0]func() // Prevents comparability and use of unkeyed literals for the builder.
+
+	Object *Volume
+}
+
+func (b0 VolumesUpdateResponse_builder) Build() *VolumesUpdateResponse {
+	m0 := &VolumesUpdateResponse{}
+	b, x := &b0, m0
+	_, _ = b, x
+	x.Object = b.Object
+	return m0
+}
+
+type VolumesDeleteRequest struct {
+	state         protoimpl.MessageState `protogen:"hybrid.v1"`
+	Id            string                 `protobuf:"bytes,1,opt,name=id,proto3" json:"id,omitempty"`
+	unknownFields protoimpl.UnknownFields
+	sizeCache     protoimpl.SizeCache
+}
+
+func (x *VolumesDeleteRequest) Reset() {
+	*x = VolumesDeleteRequest{}
+	mi := &file_osac_private_v1_volumes_service_proto_msgTypes[8]
+	ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+	ms.StoreMessageInfo(mi)
+}
+
+func (x *VolumesDeleteRequest) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*VolumesDeleteRequest) ProtoMessage() {}
+
+func (x *VolumesDeleteRequest) ProtoReflect() protoreflect.Message {
+	mi := &file_osac_private_v1_volumes_service_proto_msgTypes[8]
+	if x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+func (x *VolumesDeleteRequest) GetId() string {
+	if x != nil {
+		return x.Id
+	}
+	return ""
+}
+
+func (x *VolumesDeleteRequest) SetId(v string) {
+	x.Id = v
+}
+
+type VolumesDeleteRequest_builder struct {
+	_ [0]func() // Prevents comparability and use of unkeyed literals for the builder.
+
+	Id string
+}
+
+func (b0 VolumesDeleteRequest_builder) Build() *VolumesDeleteRequest {
+	m0 := &VolumesDeleteRequest{}
+	b, x := &b0, m0
+	_, _ = b, x
+	x.Id = b.Id
+	return m0
+}
+
+type VolumesDeleteResponse struct {
+	state         protoimpl.MessageState `protogen:"hybrid.v1"`
+	unknownFields protoimpl.UnknownFields
+	sizeCache     protoimpl.SizeCache
+}
+
+func (x *VolumesDeleteResponse) Reset() {
+	*x = VolumesDeleteResponse{}
+	mi := &file_osac_private_v1_volumes_service_proto_msgTypes[9]
+	ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+	ms.StoreMessageInfo(mi)
+}
+
+func (x *VolumesDeleteResponse) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*VolumesDeleteResponse) ProtoMessage() {}
+
+func (x *VolumesDeleteResponse) ProtoReflect() protoreflect.Message {
+	mi := &file_osac_private_v1_volumes_service_proto_msgTypes[9]
+	if x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+type VolumesDeleteResponse_builder struct {
+	_ [0]func() // Prevents comparability and use of unkeyed literals for the builder.
+
+}
+
+func (b0 VolumesDeleteResponse_builder) Build() *VolumesDeleteResponse {
+	m0 := &VolumesDeleteResponse{}
+	b, x := &b0, m0
+	_, _ = b, x
+	return m0
+}
+
+type VolumesSignalRequest struct {
+	state         protoimpl.MessageState `protogen:"hybrid.v1"`
+	Id            string                 `protobuf:"bytes,1,opt,name=id,proto3" json:"id,omitempty"`
+	unknownFields protoimpl.UnknownFields
+	sizeCache     protoimpl.SizeCache
+}
+
+func (x *VolumesSignalRequest) Reset() {
+	*x = VolumesSignalRequest{}
+	mi := &file_osac_private_v1_volumes_service_proto_msgTypes[10]
+	ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+	ms.StoreMessageInfo(mi)
+}
+
+func (x *VolumesSignalRequest) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*VolumesSignalRequest) ProtoMessage() {}
+
+func (x *VolumesSignalRequest) ProtoReflect() protoreflect.Message {
+	mi := &file_osac_private_v1_volumes_service_proto_msgTypes[10]
+	if x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+func (x *VolumesSignalRequest) GetId() string {
+	if x != nil {
+		return x.Id
+	}
+	return ""
+}
+
+func (x *VolumesSignalRequest) SetId(v string) {
+	x.Id = v
+}
+
+type VolumesSignalRequest_builder struct {
+	_ [0]func() // Prevents comparability and use of unkeyed literals for the builder.
+
+	Id string
+}
+
+func (b0 VolumesSignalRequest_builder) Build() *VolumesSignalRequest {
+	m0 := &VolumesSignalRequest{}
+	b, x := &b0, m0
+	_, _ = b, x
+	x.Id = b.Id
+	return m0
+}
+
+type VolumesSignalResponse struct {
+	state         protoimpl.MessageState `protogen:"hybrid.v1"`
+	unknownFields protoimpl.UnknownFields
+	sizeCache     protoimpl.SizeCache
+}
+
+func (x *VolumesSignalResponse) Reset() {
+	*x = VolumesSignalResponse{}
+	mi := &file_osac_private_v1_volumes_service_proto_msgTypes[11]
+	ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+	ms.StoreMessageInfo(mi)
+}
+
+func (x *VolumesSignalResponse) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*VolumesSignalResponse) ProtoMessage() {}
+
+func (x *VolumesSignalResponse) ProtoReflect() protoreflect.Message {
+	mi := &file_osac_private_v1_volumes_service_proto_msgTypes[11]
+	if x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+type VolumesSignalResponse_builder struct {
+	_ [0]func() // Prevents comparability and use of unkeyed literals for the builder.
+
+}
+
+func (b0 VolumesSignalResponse_builder) Build() *VolumesSignalResponse {
+	m0 := &VolumesSignalResponse{}
+	b, x := &b0, m0
+	_, _ = b, x
+	return m0
+}
+
+var File_osac_private_v1_volumes_service_proto protoreflect.FileDescriptor
+
+var file_osac_private_v1_volumes_service_proto_rawDesc = string([]byte{
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+	0x56, 0x31, 0x5c, 0x47, 0x50, 0x42, 0x4d, 0x65, 0x74, 0x61, 0x64, 0x61, 0x74, 0x61, 0xea, 0x02,
+	0x11, 0x4f, 0x73, 0x61, 0x63, 0x3a, 0x3a, 0x50, 0x72, 0x69, 0x76, 0x61, 0x74, 0x65, 0x3a, 0x3a,
+	0x56, 0x31, 0x62, 0x06, 0x70, 0x72, 0x6f, 0x74, 0x6f, 0x33,
+})
+
+var file_osac_private_v1_volumes_service_proto_msgTypes = make([]protoimpl.MessageInfo, 12)
+var file_osac_private_v1_volumes_service_proto_goTypes = []any{
+	(*VolumesListRequest)(nil),    // 0: osac.private.v1.VolumesListRequest
+	(*VolumesListResponse)(nil),   // 1: osac.private.v1.VolumesListResponse
+	(*VolumesGetRequest)(nil),     // 2: osac.private.v1.VolumesGetRequest
+	(*VolumesGetResponse)(nil),    // 3: osac.private.v1.VolumesGetResponse
+	(*VolumesCreateRequest)(nil),  // 4: osac.private.v1.VolumesCreateRequest
+	(*VolumesCreateResponse)(nil), // 5: osac.private.v1.VolumesCreateResponse
+	(*VolumesUpdateRequest)(nil),  // 6: osac.private.v1.VolumesUpdateRequest
+	(*VolumesUpdateResponse)(nil), // 7: osac.private.v1.VolumesUpdateResponse
+	(*VolumesDeleteRequest)(nil),  // 8: osac.private.v1.VolumesDeleteRequest
+	(*VolumesDeleteResponse)(nil), // 9: osac.private.v1.VolumesDeleteResponse
+	(*VolumesSignalRequest)(nil),  // 10: osac.private.v1.VolumesSignalRequest
+	(*VolumesSignalResponse)(nil), // 11: osac.private.v1.VolumesSignalResponse
+	(*Volume)(nil),                // 12: osac.private.v1.Volume
+	(*fieldmaskpb.FieldMask)(nil), // 13: google.protobuf.FieldMask
+}
+var file_osac_private_v1_volumes_service_proto_depIdxs = []int32{
+	12, // 0: osac.private.v1.VolumesListResponse.items:type_name -> osac.private.v1.Volume
+	12, // 1: osac.private.v1.VolumesGetResponse.object:type_name -> osac.private.v1.Volume
+	12, // 2: osac.private.v1.VolumesCreateRequest.object:type_name -> osac.private.v1.Volume
+	12, // 3: osac.private.v1.VolumesCreateResponse.object:type_name -> osac.private.v1.Volume
+	12, // 4: osac.private.v1.VolumesUpdateRequest.object:type_name -> osac.private.v1.Volume
+	13, // 5: osac.private.v1.VolumesUpdateRequest.update_mask:type_name -> google.protobuf.FieldMask
+	12, // 6: osac.private.v1.VolumesUpdateResponse.object:type_name -> osac.private.v1.Volume
+	0,  // 7: osac.private.v1.Volumes.List:input_type -> osac.private.v1.VolumesListRequest
+	2,  // 8: osac.private.v1.Volumes.Get:input_type -> osac.private.v1.VolumesGetRequest
+	4,  // 9: osac.private.v1.Volumes.Create:input_type -> osac.private.v1.VolumesCreateRequest
+	6,  // 10: osac.private.v1.Volumes.Update:input_type -> osac.private.v1.VolumesUpdateRequest
+	8,  // 11: osac.private.v1.Volumes.Delete:input_type -> osac.private.v1.VolumesDeleteRequest
+	10, // 12: osac.private.v1.Volumes.Signal:input_type -> osac.private.v1.VolumesSignalRequest
+	1,  // 13: osac.private.v1.Volumes.List:output_type -> osac.private.v1.VolumesListResponse
+	3,  // 14: osac.private.v1.Volumes.Get:output_type -> osac.private.v1.VolumesGetResponse
+	5,  // 15: osac.private.v1.Volumes.Create:output_type -> osac.private.v1.VolumesCreateResponse
+	7,  // 16: osac.private.v1.Volumes.Update:output_type -> osac.private.v1.VolumesUpdateResponse
+	9,  // 17: osac.private.v1.Volumes.Delete:output_type -> osac.private.v1.VolumesDeleteResponse
+	11, // 18: osac.private.v1.Volumes.Signal:output_type -> osac.private.v1.VolumesSignalResponse
+	13, // [13:19] is the sub-list for method output_type
+	7,  // [7:13] is the sub-list for method input_type
+	7,  // [7:7] is the sub-list for extension type_name
+	7,  // [7:7] is the sub-list for extension extendee
+	0,  // [0:7] is the sub-list for field type_name
+}
+
+func init() { file_osac_private_v1_volumes_service_proto_init() }
+func file_osac_private_v1_volumes_service_proto_init() {
+	if File_osac_private_v1_volumes_service_proto != nil {
+		return
+	}
+	file_osac_private_v1_volume_type_proto_init()
+	file_osac_private_v1_volumes_service_proto_msgTypes[0].OneofWrappers = []any{}
+	type x struct{}
+	out := protoimpl.TypeBuilder{
+		File: protoimpl.DescBuilder{
+			GoPackagePath: reflect.TypeOf(x{}).PkgPath(),
+			RawDescriptor: unsafe.Slice(unsafe.StringData(file_osac_private_v1_volumes_service_proto_rawDesc), len(file_osac_private_v1_volumes_service_proto_rawDesc)),
+			NumEnums:      0,
+			NumMessages:   12,
+			NumExtensions: 0,
+			NumServices:   1,
+		},
+		GoTypes:           file_osac_private_v1_volumes_service_proto_goTypes,
+		DependencyIndexes: file_osac_private_v1_volumes_service_proto_depIdxs,
+		MessageInfos:      file_osac_private_v1_volumes_service_proto_msgTypes,
+	}.Build()
+	File_osac_private_v1_volumes_service_proto = out.File
+	file_osac_private_v1_volumes_service_proto_goTypes = nil
+	file_osac_private_v1_volumes_service_proto_depIdxs = nil
+}
diff --git a/fulfillment-service/internal/api/osac/private/v1/volumes_service.pb.gw.go b/fulfillment-service/internal/api/osac/private/v1/volumes_service.pb.gw.go
new file mode 100644
index 000000000..2e94c73d7
--- /dev/null
+++ b/fulfillment-service/internal/api/osac/private/v1/volumes_service.pb.gw.go
@@ -0,0 +1,516 @@
+// Code generated by protoc-gen-grpc-gateway. DO NOT EDIT.
+// source: osac/private/v1/volumes_service.proto
+
+/*
+Package privatev1 is a reverse proxy.
+
+It translates gRPC into RESTful JSON APIs.
+*/
+package privatev1
+
+import (
+	"context"
+	"errors"
+	"io"
+	"net/http"
+
+	"github.com/grpc-ecosystem/grpc-gateway/v2/runtime"
+	"github.com/grpc-ecosystem/grpc-gateway/v2/utilities"
+	"google.golang.org/grpc"
+	"google.golang.org/grpc/codes"
+	"google.golang.org/grpc/grpclog"
+	"google.golang.org/grpc/metadata"
+	"google.golang.org/grpc/status"
+	"google.golang.org/protobuf/proto"
+)
+
+// Suppress "imported and not used" errors
+var (
+	_ codes.Code
+	_ io.Reader
+	_ status.Status
+	_ = errors.New
+	_ = runtime.String
+	_ = utilities.NewDoubleArray
+	_ = metadata.Join
+)
+
+var filter_Volumes_List_0 = &utilities.DoubleArray{Encoding: map[string]int{}, Base: []int(nil), Check: []int(nil)}
+
+func request_Volumes_List_0(ctx context.Context, marshaler runtime.Marshaler, client VolumesClient, req *http.Request, pathParams map[string]string) (proto.Message, runtime.ServerMetadata, error) {
+	var (
+		protoReq VolumesListRequest
+		metadata runtime.ServerMetadata
+	)
+	if err := req.ParseForm(); err != nil {
+		return nil, metadata, status.Errorf(codes.InvalidArgument, "%v", err)
+	}
+	if err := runtime.PopulateQueryParameters(&protoReq, req.Form, filter_Volumes_List_0); err != nil {
+		return nil, metadata, status.Errorf(codes.InvalidArgument, "%v", err)
+	}
+	msg, err := client.List(ctx, &protoReq, grpc.Header(&metadata.HeaderMD), grpc.Trailer(&metadata.TrailerMD))
+	return msg, metadata, err
+}
+
+func local_request_Volumes_List_0(ctx context.Context, marshaler runtime.Marshaler, server VolumesServer, req *http.Request, pathParams map[string]string) (proto.Message, runtime.ServerMetadata, error) {
+	var (
+		protoReq VolumesListRequest
+		metadata runtime.ServerMetadata
+	)
+	if err := req.ParseForm(); err != nil {
+		return nil, metadata, status.Errorf(codes.InvalidArgument, "%v", err)
+	}
+	if err := runtime.PopulateQueryParameters(&protoReq, req.Form, filter_Volumes_List_0); err != nil {
+		return nil, metadata, status.Errorf(codes.InvalidArgument, "%v", err)
+	}
+	msg, err := server.List(ctx, &protoReq)
+	return msg, metadata, err
+}
+
+func request_Volumes_Get_0(ctx context.Context, marshaler runtime.Marshaler, client VolumesClient, req *http.Request, pathParams map[string]string) (proto.Message, runtime.ServerMetadata, error) {
+	var (
+		protoReq VolumesGetRequest
+		metadata runtime.ServerMetadata
+		err      error
+	)
+	val, ok := pathParams["id"]
+	if !ok {
+		return nil, metadata, status.Errorf(codes.InvalidArgument, "missing parameter %s", "id")
+	}
+	protoReq.Id, err = runtime.String(val)
+	if err != nil {
+		return nil, metadata, status.Errorf(codes.InvalidArgument, "type mismatch, parameter: %s, error: %v", "id", err)
+	}
+	msg, err := client.Get(ctx, &protoReq, grpc.Header(&metadata.HeaderMD), grpc.Trailer(&metadata.TrailerMD))
+	return msg, metadata, err
+}
+
+func local_request_Volumes_Get_0(ctx context.Context, marshaler runtime.Marshaler, server VolumesServer, req *http.Request, pathParams map[string]string) (proto.Message, runtime.ServerMetadata, error) {
+	var (
+		protoReq VolumesGetRequest
+		metadata runtime.ServerMetadata
+		err      error
+	)
+	val, ok := pathParams["id"]
+	if !ok {
+		return nil, metadata, status.Errorf(codes.InvalidArgument, "missing parameter %s", "id")
+	}
+	protoReq.Id, err = runtime.String(val)
+	if err != nil {
+		return nil, metadata, status.Errorf(codes.InvalidArgument, "type mismatch, parameter: %s, error: %v", "id", err)
+	}
+	msg, err := server.Get(ctx, &protoReq)
+	return msg, metadata, err
+}
+
+func request_Volumes_Create_0(ctx context.Context, marshaler runtime.Marshaler, client VolumesClient, req *http.Request, pathParams map[string]string) (proto.Message, runtime.ServerMetadata, error) {
+	var (
+		protoReq VolumesCreateRequest
+		metadata runtime.ServerMetadata
+	)
+	if err := marshaler.NewDecoder(req.Body).Decode(&protoReq.Object); err != nil && !errors.Is(err, io.EOF) {
+		return nil, metadata, status.Errorf(codes.InvalidArgument, "%v", err)
+	}
+	msg, err := client.Create(ctx, &protoReq, grpc.Header(&metadata.HeaderMD), grpc.Trailer(&metadata.TrailerMD))
+	return msg, metadata, err
+}
+
+func local_request_Volumes_Create_0(ctx context.Context, marshaler runtime.Marshaler, server VolumesServer, req *http.Request, pathParams map[string]string) (proto.Message, runtime.ServerMetadata, error) {
+	var (
+		protoReq VolumesCreateRequest
+		metadata runtime.ServerMetadata
+	)
+	if err := marshaler.NewDecoder(req.Body).Decode(&protoReq.Object); err != nil && !errors.Is(err, io.EOF) {
+		return nil, metadata, status.Errorf(codes.InvalidArgument, "%v", err)
+	}
+	msg, err := server.Create(ctx, &protoReq)
+	return msg, metadata, err
+}
+
+var filter_Volumes_Update_0 = &utilities.DoubleArray{Encoding: map[string]int{"object": 0, "id": 1}, Base: []int{1, 2, 1, 0, 0}, Check: []int{0, 1, 2, 3, 2}}
+
+func request_Volumes_Update_0(ctx context.Context, marshaler runtime.Marshaler, client VolumesClient, req *http.Request, pathParams map[string]string) (proto.Message, runtime.ServerMetadata, error) {
+	var (
+		protoReq VolumesUpdateRequest
+		metadata runtime.ServerMetadata
+		err      error
+	)
+	newReader, berr := utilities.IOReaderFactory(req.Body)
+	if berr != nil {
+		return nil, metadata, status.Errorf(codes.InvalidArgument, "%v", berr)
+	}
+	if err := marshaler.NewDecoder(newReader()).Decode(&protoReq.Object); err != nil && !errors.Is(err, io.EOF) {
+		return nil, metadata, status.Errorf(codes.InvalidArgument, "%v", err)
+	}
+	if protoReq.UpdateMask == nil || len(protoReq.UpdateMask.GetPaths()) == 0 {
+		if fieldMask, err := runtime.FieldMaskFromRequestBody(newReader(), protoReq.Object); err != nil {
+			return nil, metadata, status.Errorf(codes.InvalidArgument, "%v", err)
+		} else {
+			protoReq.UpdateMask = fieldMask
+		}
+	}
+	val, ok := pathParams["object.id"]
+	if !ok {
+		return nil, metadata, status.Errorf(codes.InvalidArgument, "missing parameter %s", "object.id")
+	}
+	err = runtime.PopulateFieldFromPath(&protoReq, "object.id", val)
+	if err != nil {
+		return nil, metadata, status.Errorf(codes.InvalidArgument, "type mismatch, parameter: %s, error: %v", "object.id", err)
+	}
+	if err := req.ParseForm(); err != nil {
+		return nil, metadata, status.Errorf(codes.InvalidArgument, "%v", err)
+	}
+	if err := runtime.PopulateQueryParameters(&protoReq, req.Form, filter_Volumes_Update_0); err != nil {
+		return nil, metadata, status.Errorf(codes.InvalidArgument, "%v", err)
+	}
+	msg, err := client.Update(ctx, &protoReq, grpc.Header(&metadata.HeaderMD), grpc.Trailer(&metadata.TrailerMD))
+	return msg, metadata, err
+}
+
+func local_request_Volumes_Update_0(ctx context.Context, marshaler runtime.Marshaler, server VolumesServer, req *http.Request, pathParams map[string]string) (proto.Message, runtime.ServerMetadata, error) {
+	var (
+		protoReq VolumesUpdateRequest
+		metadata runtime.ServerMetadata
+		err      error
+	)
+	newReader, berr := utilities.IOReaderFactory(req.Body)
+	if berr != nil {
+		return nil, metadata, status.Errorf(codes.InvalidArgument, "%v", berr)
+	}
+	if err := marshaler.NewDecoder(newReader()).Decode(&protoReq.Object); err != nil && !errors.Is(err, io.EOF) {
+		return nil, metadata, status.Errorf(codes.InvalidArgument, "%v", err)
+	}
+	if protoReq.UpdateMask == nil || len(protoReq.UpdateMask.GetPaths()) == 0 {
+		if fieldMask, err := runtime.FieldMaskFromRequestBody(newReader(), protoReq.Object); err != nil {
+			return nil, metadata, status.Errorf(codes.InvalidArgument, "%v", err)
+		} else {
+			protoReq.UpdateMask = fieldMask
+		}
+	}
+	val, ok := pathParams["object.id"]
+	if !ok {
+		return nil, metadata, status.Errorf(codes.InvalidArgument, "missing parameter %s", "object.id")
+	}
+	err = runtime.PopulateFieldFromPath(&protoReq, "object.id", val)
+	if err != nil {
+		return nil, metadata, status.Errorf(codes.InvalidArgument, "type mismatch, parameter: %s, error: %v", "object.id", err)
+	}
+	if err := req.ParseForm(); err != nil {
+		return nil, metadata, status.Errorf(codes.InvalidArgument, "%v", err)
+	}
+	if err := runtime.PopulateQueryParameters(&protoReq, req.Form, filter_Volumes_Update_0); err != nil {
+		return nil, metadata, status.Errorf(codes.InvalidArgument, "%v", err)
+	}
+	msg, err := server.Update(ctx, &protoReq)
+	return msg, metadata, err
+}
+
+func request_Volumes_Delete_0(ctx context.Context, marshaler runtime.Marshaler, client VolumesClient, req *http.Request, pathParams map[string]string) (proto.Message, runtime.ServerMetadata, error) {
+	var (
+		protoReq VolumesDeleteRequest
+		metadata runtime.ServerMetadata
+		err      error
+	)
+	val, ok := pathParams["id"]
+	if !ok {
+		return nil, metadata, status.Errorf(codes.InvalidArgument, "missing parameter %s", "id")
+	}
+	protoReq.Id, err = runtime.String(val)
+	if err != nil {
+		return nil, metadata, status.Errorf(codes.InvalidArgument, "type mismatch, parameter: %s, error: %v", "id", err)
+	}
+	msg, err := client.Delete(ctx, &protoReq, grpc.Header(&metadata.HeaderMD), grpc.Trailer(&metadata.TrailerMD))
+	return msg, metadata, err
+}
+
+func local_request_Volumes_Delete_0(ctx context.Context, marshaler runtime.Marshaler, server VolumesServer, req *http.Request, pathParams map[string]string) (proto.Message, runtime.ServerMetadata, error) {
+	var (
+		protoReq VolumesDeleteRequest
+		metadata runtime.ServerMetadata
+		err      error
+	)
+	val, ok := pathParams["id"]
+	if !ok {
+		return nil, metadata, status.Errorf(codes.InvalidArgument, "missing parameter %s", "id")
+	}
+	protoReq.Id, err = runtime.String(val)
+	if err != nil {
+		return nil, metadata, status.Errorf(codes.InvalidArgument, "type mismatch, parameter: %s, error: %v", "id", err)
+	}
+	msg, err := server.Delete(ctx, &protoReq)
+	return msg, metadata, err
+}
+
+// RegisterVolumesHandlerServer registers the http handlers for service Volumes to "mux".
+// UnaryRPC     :call VolumesServer directly.
+// StreamingRPC :currently unsupported pending https://github.com/grpc/grpc-go/issues/906.
+// Note that using this registration option will cause many gRPC library features to stop working. Consider using RegisterVolumesHandlerFromEndpoint instead.
+// GRPC interceptors will not work for this type of registration. To use interceptors, you must use the "runtime.WithMiddlewares" option in the "runtime.NewServeMux" call.
+func RegisterVolumesHandlerServer(ctx context.Context, mux *runtime.ServeMux, server VolumesServer) error {
+	mux.Handle(http.MethodGet, pattern_Volumes_List_0, func(w http.ResponseWriter, req *http.Request, pathParams map[string]string) {
+		ctx, cancel := context.WithCancel(req.Context())
+		defer cancel()
+		var stream runtime.ServerTransportStream
+		ctx = grpc.NewContextWithServerTransportStream(ctx, &stream)
+		inboundMarshaler, outboundMarshaler := runtime.MarshalerForRequest(mux, req)
+		annotatedContext, err := runtime.AnnotateIncomingContext(ctx, mux, req, "/osac.private.v1.Volumes/List", runtime.WithHTTPPathPattern("/api/private/v1/volumes"))
+		if err != nil {
+			runtime.HTTPError(ctx, mux, outboundMarshaler, w, req, err)
+			return
+		}
+		resp, md, err := local_request_Volumes_List_0(annotatedContext, inboundMarshaler, server, req, pathParams)
+		md.HeaderMD, md.TrailerMD = metadata.Join(md.HeaderMD, stream.Header()), metadata.Join(md.TrailerMD, stream.Trailer())
+		annotatedContext = runtime.NewServerMetadataContext(annotatedContext, md)
+		if err != nil {
+			runtime.HTTPError(annotatedContext, mux, outboundMarshaler, w, req, err)
+			return
+		}
+		forward_Volumes_List_0(annotatedContext, mux, outboundMarshaler, w, req, resp, mux.GetForwardResponseOptions()...)
+	})
+	mux.Handle(http.MethodGet, pattern_Volumes_Get_0, func(w http.ResponseWriter, req *http.Request, pathParams map[string]string) {
+		ctx, cancel := context.WithCancel(req.Context())
+		defer cancel()
+		var stream runtime.ServerTransportStream
+		ctx = grpc.NewContextWithServerTransportStream(ctx, &stream)
+		inboundMarshaler, outboundMarshaler := runtime.MarshalerForRequest(mux, req)
+		annotatedContext, err := runtime.AnnotateIncomingContext(ctx, mux, req, "/osac.private.v1.Volumes/Get", runtime.WithHTTPPathPattern("/api/private/v1/volumes/{id}"))
+		if err != nil {
+			runtime.HTTPError(ctx, mux, outboundMarshaler, w, req, err)
+			return
+		}
+		resp, md, err := local_request_Volumes_Get_0(annotatedContext, inboundMarshaler, server, req, pathParams)
+		md.HeaderMD, md.TrailerMD = metadata.Join(md.HeaderMD, stream.Header()), metadata.Join(md.TrailerMD, stream.Trailer())
+		annotatedContext = runtime.NewServerMetadataContext(annotatedContext, md)
+		if err != nil {
+			runtime.HTTPError(annotatedContext, mux, outboundMarshaler, w, req, err)
+			return
+		}
+		forward_Volumes_Get_0(annotatedContext, mux, outboundMarshaler, w, req, response_Volumes_Get_0{resp.(*VolumesGetResponse)}, mux.GetForwardResponseOptions()...)
+	})
+	mux.Handle(http.MethodPost, pattern_Volumes_Create_0, func(w http.ResponseWriter, req *http.Request, pathParams map[string]string) {
+		ctx, cancel := context.WithCancel(req.Context())
+		defer cancel()
+		var stream runtime.ServerTransportStream
+		ctx = grpc.NewContextWithServerTransportStream(ctx, &stream)
+		inboundMarshaler, outboundMarshaler := runtime.MarshalerForRequest(mux, req)
+		annotatedContext, err := runtime.AnnotateIncomingContext(ctx, mux, req, "/osac.private.v1.Volumes/Create", runtime.WithHTTPPathPattern("/api/private/v1/volumes"))
+		if err != nil {
+			runtime.HTTPError(ctx, mux, outboundMarshaler, w, req, err)
+			return
+		}
+		resp, md, err := local_request_Volumes_Create_0(annotatedContext, inboundMarshaler, server, req, pathParams)
+		md.HeaderMD, md.TrailerMD = metadata.Join(md.HeaderMD, stream.Header()), metadata.Join(md.TrailerMD, stream.Trailer())
+		annotatedContext = runtime.NewServerMetadataContext(annotatedContext, md)
+		if err != nil {
+			runtime.HTTPError(annotatedContext, mux, outboundMarshaler, w, req, err)
+			return
+		}
+		forward_Volumes_Create_0(annotatedContext, mux, outboundMarshaler, w, req, response_Volumes_Create_0{resp.(*VolumesCreateResponse)}, mux.GetForwardResponseOptions()...)
+	})
+	mux.Handle(http.MethodPatch, pattern_Volumes_Update_0, func(w http.ResponseWriter, req *http.Request, pathParams map[string]string) {
+		ctx, cancel := context.WithCancel(req.Context())
+		defer cancel()
+		var stream runtime.ServerTransportStream
+		ctx = grpc.NewContextWithServerTransportStream(ctx, &stream)
+		inboundMarshaler, outboundMarshaler := runtime.MarshalerForRequest(mux, req)
+		annotatedContext, err := runtime.AnnotateIncomingContext(ctx, mux, req, "/osac.private.v1.Volumes/Update", runtime.WithHTTPPathPattern("/api/private/v1/volumes/{object.id}"))
+		if err != nil {
+			runtime.HTTPError(ctx, mux, outboundMarshaler, w, req, err)
+			return
+		}
+		resp, md, err := local_request_Volumes_Update_0(annotatedContext, inboundMarshaler, server, req, pathParams)
+		md.HeaderMD, md.TrailerMD = metadata.Join(md.HeaderMD, stream.Header()), metadata.Join(md.TrailerMD, stream.Trailer())
+		annotatedContext = runtime.NewServerMetadataContext(annotatedContext, md)
+		if err != nil {
+			runtime.HTTPError(annotatedContext, mux, outboundMarshaler, w, req, err)
+			return
+		}
+		forward_Volumes_Update_0(annotatedContext, mux, outboundMarshaler, w, req, response_Volumes_Update_0{resp.(*VolumesUpdateResponse)}, mux.GetForwardResponseOptions()...)
+	})
+	mux.Handle(http.MethodDelete, pattern_Volumes_Delete_0, func(w http.ResponseWriter, req *http.Request, pathParams map[string]string) {
+		ctx, cancel := context.WithCancel(req.Context())
+		defer cancel()
+		var stream runtime.ServerTransportStream
+		ctx = grpc.NewContextWithServerTransportStream(ctx, &stream)
+		inboundMarshaler, outboundMarshaler := runtime.MarshalerForRequest(mux, req)
+		annotatedContext, err := runtime.AnnotateIncomingContext(ctx, mux, req, "/osac.private.v1.Volumes/Delete", runtime.WithHTTPPathPattern("/api/private/v1/volumes/{id}"))
+		if err != nil {
+			runtime.HTTPError(ctx, mux, outboundMarshaler, w, req, err)
+			return
+		}
+		resp, md, err := local_request_Volumes_Delete_0(annotatedContext, inboundMarshaler, server, req, pathParams)
+		md.HeaderMD, md.TrailerMD = metadata.Join(md.HeaderMD, stream.Header()), metadata.Join(md.TrailerMD, stream.Trailer())
+		annotatedContext = runtime.NewServerMetadataContext(annotatedContext, md)
+		if err != nil {
+			runtime.HTTPError(annotatedContext, mux, outboundMarshaler, w, req, err)
+			return
+		}
+		forward_Volumes_Delete_0(annotatedContext, mux, outboundMarshaler, w, req, resp, mux.GetForwardResponseOptions()...)
+	})
+
+	return nil
+}
+
+// RegisterVolumesHandlerFromEndpoint is same as RegisterVolumesHandler but
+// automatically dials to "endpoint" and closes the connection when "ctx" gets done.
+func RegisterVolumesHandlerFromEndpoint(ctx context.Context, mux *runtime.ServeMux, endpoint string, opts []grpc.DialOption) (err error) {
+	conn, err := grpc.NewClient(endpoint, opts...)
+	if err != nil {
+		return err
+	}
+	defer func() {
+		if err != nil {
+			if cerr := conn.Close(); cerr != nil {
+				grpclog.Errorf("Failed to close conn to %s: %v", endpoint, cerr)
+			}
+			return
+		}
+		go func() {
+			<-ctx.Done()
+			if cerr := conn.Close(); cerr != nil {
+				grpclog.Errorf("Failed to close conn to %s: %v", endpoint, cerr)
+			}
+		}()
+	}()
+	return RegisterVolumesHandler(ctx, mux, conn)
+}
+
+// RegisterVolumesHandler registers the http handlers for service Volumes to "mux".
+// The handlers forward requests to the grpc endpoint over "conn".
+func RegisterVolumesHandler(ctx context.Context, mux *runtime.ServeMux, conn *grpc.ClientConn) error {
+	return RegisterVolumesHandlerClient(ctx, mux, NewVolumesClient(conn))
+}
+
+// RegisterVolumesHandlerClient registers the http handlers for service Volumes
+// to "mux". The handlers forward requests to the grpc endpoint over the given implementation of "VolumesClient".
+// Note: the gRPC framework executes interceptors within the gRPC handler. If the passed in "VolumesClient"
+// doesn't go through the normal gRPC flow (creating a gRPC client etc.) then it will be up to the passed in
+// "VolumesClient" to call the correct interceptors. This client ignores the HTTP middlewares.
+func RegisterVolumesHandlerClient(ctx context.Context, mux *runtime.ServeMux, client VolumesClient) error {
+	mux.Handle(http.MethodGet, pattern_Volumes_List_0, func(w http.ResponseWriter, req *http.Request, pathParams map[string]string) {
+		ctx, cancel := context.WithCancel(req.Context())
+		defer cancel()
+		inboundMarshaler, outboundMarshaler := runtime.MarshalerForRequest(mux, req)
+		annotatedContext, err := runtime.AnnotateContext(ctx, mux, req, "/osac.private.v1.Volumes/List", runtime.WithHTTPPathPattern("/api/private/v1/volumes"))
+		if err != nil {
+			runtime.HTTPError(ctx, mux, outboundMarshaler, w, req, err)
+			return
+		}
+		resp, md, err := request_Volumes_List_0(annotatedContext, inboundMarshaler, client, req, pathParams)
+		annotatedContext = runtime.NewServerMetadataContext(annotatedContext, md)
+		if err != nil {
+			runtime.HTTPError(annotatedContext, mux, outboundMarshaler, w, req, err)
+			return
+		}
+		forward_Volumes_List_0(annotatedContext, mux, outboundMarshaler, w, req, resp, mux.GetForwardResponseOptions()...)
+	})
+	mux.Handle(http.MethodGet, pattern_Volumes_Get_0, func(w http.ResponseWriter, req *http.Request, pathParams map[string]string) {
+		ctx, cancel := context.WithCancel(req.Context())
+		defer cancel()
+		inboundMarshaler, outboundMarshaler := runtime.MarshalerForRequest(mux, req)
+		annotatedContext, err := runtime.AnnotateContext(ctx, mux, req, "/osac.private.v1.Volumes/Get", runtime.WithHTTPPathPattern("/api/private/v1/volumes/{id}"))
+		if err != nil {
+			runtime.HTTPError(ctx, mux, outboundMarshaler, w, req, err)
+			return
+		}
+		resp, md, err := request_Volumes_Get_0(annotatedContext, inboundMarshaler, client, req, pathParams)
+		annotatedContext = runtime.NewServerMetadataContext(annotatedContext, md)
+		if err != nil {
+			runtime.HTTPError(annotatedContext, mux, outboundMarshaler, w, req, err)
+			return
+		}
+		forward_Volumes_Get_0(annotatedContext, mux, outboundMarshaler, w, req, response_Volumes_Get_0{resp.(*VolumesGetResponse)}, mux.GetForwardResponseOptions()...)
+	})
+	mux.Handle(http.MethodPost, pattern_Volumes_Create_0, func(w http.ResponseWriter, req *http.Request, pathParams map[string]string) {
+		ctx, cancel := context.WithCancel(req.Context())
+		defer cancel()
+		inboundMarshaler, outboundMarshaler := runtime.MarshalerForRequest(mux, req)
+		annotatedContext, err := runtime.AnnotateContext(ctx, mux, req, "/osac.private.v1.Volumes/Create", runtime.WithHTTPPathPattern("/api/private/v1/volumes"))
+		if err != nil {
+			runtime.HTTPError(ctx, mux, outboundMarshaler, w, req, err)
+			return
+		}
+		resp, md, err := request_Volumes_Create_0(annotatedContext, inboundMarshaler, client, req, pathParams)
+		annotatedContext = runtime.NewServerMetadataContext(annotatedContext, md)
+		if err != nil {
+			runtime.HTTPError(annotatedContext, mux, outboundMarshaler, w, req, err)
+			return
+		}
+		forward_Volumes_Create_0(annotatedContext, mux, outboundMarshaler, w, req, response_Volumes_Create_0{resp.(*VolumesCreateResponse)}, mux.GetForwardResponseOptions()...)
+	})
+	mux.Handle(http.MethodPatch, pattern_Volumes_Update_0, func(w http.ResponseWriter, req *http.Request, pathParams map[string]string) {
+		ctx, cancel := context.WithCancel(req.Context())
+		defer cancel()
+		inboundMarshaler, outboundMarshaler := runtime.MarshalerForRequest(mux, req)
+		annotatedContext, err := runtime.AnnotateContext(ctx, mux, req, "/osac.private.v1.Volumes/Update", runtime.WithHTTPPathPattern("/api/private/v1/volumes/{object.id}"))
+		if err != nil {
+			runtime.HTTPError(ctx, mux, outboundMarshaler, w, req, err)
+			return
+		}
+		resp, md, err := request_Volumes_Update_0(annotatedContext, inboundMarshaler, client, req, pathParams)
+		annotatedContext = runtime.NewServerMetadataContext(annotatedContext, md)
+		if err != nil {
+			runtime.HTTPError(annotatedContext, mux, outboundMarshaler, w, req, err)
+			return
+		}
+		forward_Volumes_Update_0(annotatedContext, mux, outboundMarshaler, w, req, response_Volumes_Update_0{resp.(*VolumesUpdateResponse)}, mux.GetForwardResponseOptions()...)
+	})
+	mux.Handle(http.MethodDelete, pattern_Volumes_Delete_0, func(w http.ResponseWriter, req *http.Request, pathParams map[string]string) {
+		ctx, cancel := context.WithCancel(req.Context())
+		defer cancel()
+		inboundMarshaler, outboundMarshaler := runtime.MarshalerForRequest(mux, req)
+		annotatedContext, err := runtime.AnnotateContext(ctx, mux, req, "/osac.private.v1.Volumes/Delete", runtime.WithHTTPPathPattern("/api/private/v1/volumes/{id}"))
+		if err != nil {
+			runtime.HTTPError(ctx, mux, outboundMarshaler, w, req, err)
+			return
+		}
+		resp, md, err := request_Volumes_Delete_0(annotatedContext, inboundMarshaler, client, req, pathParams)
+		annotatedContext = runtime.NewServerMetadataContext(annotatedContext, md)
+		if err != nil {
+			runtime.HTTPError(annotatedContext, mux, outboundMarshaler, w, req, err)
+			return
+		}
+		forward_Volumes_Delete_0(annotatedContext, mux, outboundMarshaler, w, req, resp, mux.GetForwardResponseOptions()...)
+	})
+	return nil
+}
+
+type response_Volumes_Get_0 struct {
+	*VolumesGetResponse
+}
+
+func (m response_Volumes_Get_0) XXX_ResponseBody() interface{} {
+	return m.Object
+}
+
+type response_Volumes_Create_0 struct {
+	*VolumesCreateResponse
+}
+
+func (m response_Volumes_Create_0) XXX_ResponseBody() interface{} {
+	return m.Object
+}
+
+type response_Volumes_Update_0 struct {
+	*VolumesUpdateResponse
+}
+
+func (m response_Volumes_Update_0) XXX_ResponseBody() interface{} {
+	return m.Object
+}
+
+var (
+	pattern_Volumes_List_0   = runtime.MustPattern(runtime.NewPattern(1, []int{2, 0, 2, 1, 2, 2, 2, 3}, []string{"api", "private", "v1", "volumes"}, ""))
+	pattern_Volumes_Get_0    = runtime.MustPattern(runtime.NewPattern(1, []int{2, 0, 2, 1, 2, 2, 2, 3, 1, 0, 4, 1, 5, 4}, []string{"api", "private", "v1", "volumes", "id"}, ""))
+	pattern_Volumes_Create_0 = runtime.MustPattern(runtime.NewPattern(1, []int{2, 0, 2, 1, 2, 2, 2, 3}, []string{"api", "private", "v1", "volumes"}, ""))
+	pattern_Volumes_Update_0 = runtime.MustPattern(runtime.NewPattern(1, []int{2, 0, 2, 1, 2, 2, 2, 3, 1, 0, 4, 1, 5, 4}, []string{"api", "private", "v1", "volumes", "object.id"}, ""))
+	pattern_Volumes_Delete_0 = runtime.MustPattern(runtime.NewPattern(1, []int{2, 0, 2, 1, 2, 2, 2, 3, 1, 0, 4, 1, 5, 4}, []string{"api", "private", "v1", "volumes", "id"}, ""))
+)
+
+var (
+	forward_Volumes_List_0   = runtime.ForwardResponseMessage
+	forward_Volumes_Get_0    = runtime.ForwardResponseMessage
+	forward_Volumes_Create_0 = runtime.ForwardResponseMessage
+	forward_Volumes_Update_0 = runtime.ForwardResponseMessage
+	forward_Volumes_Delete_0 = runtime.ForwardResponseMessage
+)
diff --git a/fulfillment-service/internal/api/osac/private/v1/volumes_service_grpc.pb.go b/fulfillment-service/internal/api/osac/private/v1/volumes_service_grpc.pb.go
new file mode 100644
index 000000000..87fc0553a
--- /dev/null
+++ b/fulfillment-service/internal/api/osac/private/v1/volumes_service_grpc.pb.go
@@ -0,0 +1,338 @@
+//
+// Copyright (c) 2026 Red Hat, Inc.
+//
+// Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with
+// the License. You may obtain a copy of the License at
+//
+//   http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on
+// an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the
+// specific language governing permissions and limitations under the License.
+//
+
+// Code generated by protoc-gen-go-grpc. DO NOT EDIT.
+// versions:
+// - protoc-gen-go-grpc v1.5.1
+// - protoc             (unknown)
+// source: osac/private/v1/volumes_service.proto
+
+package privatev1
+
+import (
+	context "context"
+	grpc "google.golang.org/grpc"
+	codes "google.golang.org/grpc/codes"
+	status "google.golang.org/grpc/status"
+)
+
+// This is a compile-time assertion to ensure that this generated file
+// is compatible with the grpc package it is being compiled against.
+// Requires gRPC-Go v1.64.0 or later.
+const _ = grpc.SupportPackageIsVersion9
+
+const (
+	Volumes_List_FullMethodName   = "/osac.private.v1.Volumes/List"
+	Volumes_Get_FullMethodName    = "/osac.private.v1.Volumes/Get"
+	Volumes_Create_FullMethodName = "/osac.private.v1.Volumes/Create"
+	Volumes_Update_FullMethodName = "/osac.private.v1.Volumes/Update"
+	Volumes_Delete_FullMethodName = "/osac.private.v1.Volumes/Delete"
+	Volumes_Signal_FullMethodName = "/osac.private.v1.Volumes/Signal"
+)
+
+// VolumesClient is the client API for Volumes service.
+//
+// For semantics around ctx use and closing/ending streaming RPCs, please refer to https://pkg.go.dev/google.golang.org/grpc/?tab=doc#ClientConn.NewStream.
+type VolumesClient interface {
+	// Retrieves the list of volumes.
+	List(ctx context.Context, in *VolumesListRequest, opts ...grpc.CallOption) (*VolumesListResponse, error)
+	// Retrieves the details of one specific volume.
+	Get(ctx context.Context, in *VolumesGetRequest, opts ...grpc.CallOption) (*VolumesGetResponse, error)
+	// Creates a new volume.
+	Create(ctx context.Context, in *VolumesCreateRequest, opts ...grpc.CallOption) (*VolumesCreateResponse, error)
+	// Updates an existing volume.
+	Update(ctx context.Context, in *VolumesUpdateRequest, opts ...grpc.CallOption) (*VolumesUpdateResponse, error)
+	// Deletes a volume.
+	Delete(ctx context.Context, in *VolumesDeleteRequest, opts ...grpc.CallOption) (*VolumesDeleteResponse, error)
+	// Signals the volume for re-reconciliation. Called by the operator feedback controller after
+	// Volume CR status changes on the hub.
+	Signal(ctx context.Context, in *VolumesSignalRequest, opts ...grpc.CallOption) (*VolumesSignalResponse, error)
+}
+
+type volumesClient struct {
+	cc grpc.ClientConnInterface
+}
+
+func NewVolumesClient(cc grpc.ClientConnInterface) VolumesClient {
+	return &volumesClient{cc}
+}
+
+func (c *volumesClient) List(ctx context.Context, in *VolumesListRequest, opts ...grpc.CallOption) (*VolumesListResponse, error) {
+	cOpts := append([]grpc.CallOption{grpc.StaticMethod()}, opts...)
+	out := new(VolumesListResponse)
+	err := c.cc.Invoke(ctx, Volumes_List_FullMethodName, in, out, cOpts...)
+	if err != nil {
+		return nil, err
+	}
+	return out, nil
+}
+
+func (c *volumesClient) Get(ctx context.Context, in *VolumesGetRequest, opts ...grpc.CallOption) (*VolumesGetResponse, error) {
+	cOpts := append([]grpc.CallOption{grpc.StaticMethod()}, opts...)
+	out := new(VolumesGetResponse)
+	err := c.cc.Invoke(ctx, Volumes_Get_FullMethodName, in, out, cOpts...)
+	if err != nil {
+		return nil, err
+	}
+	return out, nil
+}
+
+func (c *volumesClient) Create(ctx context.Context, in *VolumesCreateRequest, opts ...grpc.CallOption) (*VolumesCreateResponse, error) {
+	cOpts := append([]grpc.CallOption{grpc.StaticMethod()}, opts...)
+	out := new(VolumesCreateResponse)
+	err := c.cc.Invoke(ctx, Volumes_Create_FullMethodName, in, out, cOpts...)
+	if err != nil {
+		return nil, err
+	}
+	return out, nil
+}
+
+func (c *volumesClient) Update(ctx context.Context, in *VolumesUpdateRequest, opts ...grpc.CallOption) (*VolumesUpdateResponse, error) {
+	cOpts := append([]grpc.CallOption{grpc.StaticMethod()}, opts...)
+	out := new(VolumesUpdateResponse)
+	err := c.cc.Invoke(ctx, Volumes_Update_FullMethodName, in, out, cOpts...)
+	if err != nil {
+		return nil, err
+	}
+	return out, nil
+}
+
+func (c *volumesClient) Delete(ctx context.Context, in *VolumesDeleteRequest, opts ...grpc.CallOption) (*VolumesDeleteResponse, error) {
+	cOpts := append([]grpc.CallOption{grpc.StaticMethod()}, opts...)
+	out := new(VolumesDeleteResponse)
+	err := c.cc.Invoke(ctx, Volumes_Delete_FullMethodName, in, out, cOpts...)
+	if err != nil {
+		return nil, err
+	}
+	return out, nil
+}
+
+func (c *volumesClient) Signal(ctx context.Context, in *VolumesSignalRequest, opts ...grpc.CallOption) (*VolumesSignalResponse, error) {
+	cOpts := append([]grpc.CallOption{grpc.StaticMethod()}, opts...)
+	out := new(VolumesSignalResponse)
+	err := c.cc.Invoke(ctx, Volumes_Signal_FullMethodName, in, out, cOpts...)
+	if err != nil {
+		return nil, err
+	}
+	return out, nil
+}
+
+// VolumesServer is the server API for Volumes service.
+// All implementations must embed UnimplementedVolumesServer
+// for forward compatibility.
+type VolumesServer interface {
+	// Retrieves the list of volumes.
+	List(context.Context, *VolumesListRequest) (*VolumesListResponse, error)
+	// Retrieves the details of one specific volume.
+	Get(context.Context, *VolumesGetRequest) (*VolumesGetResponse, error)
+	// Creates a new volume.
+	Create(context.Context, *VolumesCreateRequest) (*VolumesCreateResponse, error)
+	// Updates an existing volume.
+	Update(context.Context, *VolumesUpdateRequest) (*VolumesUpdateResponse, error)
+	// Deletes a volume.
+	Delete(context.Context, *VolumesDeleteRequest) (*VolumesDeleteResponse, error)
+	// Signals the volume for re-reconciliation. Called by the operator feedback controller after
+	// Volume CR status changes on the hub.
+	Signal(context.Context, *VolumesSignalRequest) (*VolumesSignalResponse, error)
+	mustEmbedUnimplementedVolumesServer()
+}
+
+// UnimplementedVolumesServer must be embedded to have
+// forward compatible implementations.
+//
+// NOTE: this should be embedded by value instead of pointer to avoid a nil
+// pointer dereference when methods are called.
+type UnimplementedVolumesServer struct{}
+
+func (UnimplementedVolumesServer) List(context.Context, *VolumesListRequest) (*VolumesListResponse, error) {
+	return nil, status.Errorf(codes.Unimplemented, "method List not implemented")
+}
+func (UnimplementedVolumesServer) Get(context.Context, *VolumesGetRequest) (*VolumesGetResponse, error) {
+	return nil, status.Errorf(codes.Unimplemented, "method Get not implemented")
+}
+func (UnimplementedVolumesServer) Create(context.Context, *VolumesCreateRequest) (*VolumesCreateResponse, error) {
+	return nil, status.Errorf(codes.Unimplemented, "method Create not implemented")
+}
+func (UnimplementedVolumesServer) Update(context.Context, *VolumesUpdateRequest) (*VolumesUpdateResponse, error) {
+	return nil, status.Errorf(codes.Unimplemented, "method Update not implemented")
+}
+func (UnimplementedVolumesServer) Delete(context.Context, *VolumesDeleteRequest) (*VolumesDeleteResponse, error) {
+	return nil, status.Errorf(codes.Unimplemented, "method Delete not implemented")
+}
+func (UnimplementedVolumesServer) Signal(context.Context, *VolumesSignalRequest) (*VolumesSignalResponse, error) {
+	return nil, status.Errorf(codes.Unimplemented, "method Signal not implemented")
+}
+func (UnimplementedVolumesServer) mustEmbedUnimplementedVolumesServer() {}
+func (UnimplementedVolumesServer) testEmbeddedByValue()                 {}
+
+// UnsafeVolumesServer may be embedded to opt out of forward compatibility for this service.
+// Use of this interface is not recommended, as added methods to VolumesServer will
+// result in compilation errors.
+type UnsafeVolumesServer interface {
+	mustEmbedUnimplementedVolumesServer()
+}
+
+func RegisterVolumesServer(s grpc.ServiceRegistrar, srv VolumesServer) {
+	// If the following call pancis, it indicates UnimplementedVolumesServer was
+	// embedded by pointer and is nil.  This will cause panics if an
+	// unimplemented method is ever invoked, so we test this at initialization
+	// time to prevent it from happening at runtime later due to I/O.
+	if t, ok := srv.(interface{ testEmbeddedByValue() }); ok {
+		t.testEmbeddedByValue()
+	}
+	s.RegisterService(&Volumes_ServiceDesc, srv)
+}
+
+func _Volumes_List_Handler(srv interface{}, ctx context.Context, dec func(interface{}) error, interceptor grpc.UnaryServerInterceptor) (interface{}, error) {
+	in := new(VolumesListRequest)
+	if err := dec(in); err != nil {
+		return nil, err
+	}
+	if interceptor == nil {
+		return srv.(VolumesServer).List(ctx, in)
+	}
+	info := &grpc.UnaryServerInfo{
+		Server:     srv,
+		FullMethod: Volumes_List_FullMethodName,
+	}
+	handler := func(ctx context.Context, req interface{}) (interface{}, error) {
+		return srv.(VolumesServer).List(ctx, req.(*VolumesListRequest))
+	}
+	return interceptor(ctx, in, info, handler)
+}
+
+func _Volumes_Get_Handler(srv interface{}, ctx context.Context, dec func(interface{}) error, interceptor grpc.UnaryServerInterceptor) (interface{}, error) {
+	in := new(VolumesGetRequest)
+	if err := dec(in); err != nil {
+		return nil, err
+	}
+	if interceptor == nil {
+		return srv.(VolumesServer).Get(ctx, in)
+	}
+	info := &grpc.UnaryServerInfo{
+		Server:     srv,
+		FullMethod: Volumes_Get_FullMethodName,
+	}
+	handler := func(ctx context.Context, req interface{}) (interface{}, error) {
+		return srv.(VolumesServer).Get(ctx, req.(*VolumesGetRequest))
+	}
+	return interceptor(ctx, in, info, handler)
+}
+
+func _Volumes_Create_Handler(srv interface{}, ctx context.Context, dec func(interface{}) error, interceptor grpc.UnaryServerInterceptor) (interface{}, error) {
+	in := new(VolumesCreateRequest)
+	if err := dec(in); err != nil {
+		return nil, err
+	}
+	if interceptor == nil {
+		return srv.(VolumesServer).Create(ctx, in)
+	}
+	info := &grpc.UnaryServerInfo{
+		Server:     srv,
+		FullMethod: Volumes_Create_FullMethodName,
+	}
+	handler := func(ctx context.Context, req interface{}) (interface{}, error) {
+		return srv.(VolumesServer).Create(ctx, req.(*VolumesCreateRequest))
+	}
+	return interceptor(ctx, in, info, handler)
+}
+
+func _Volumes_Update_Handler(srv interface{}, ctx context.Context, dec func(interface{}) error, interceptor grpc.UnaryServerInterceptor) (interface{}, error) {
+	in := new(VolumesUpdateRequest)
+	if err := dec(in); err != nil {
+		return nil, err
+	}
+	if interceptor == nil {
+		return srv.(VolumesServer).Update(ctx, in)
+	}
+	info := &grpc.UnaryServerInfo{
+		Server:     srv,
+		FullMethod: Volumes_Update_FullMethodName,
+	}
+	handler := func(ctx context.Context, req interface{}) (interface{}, error) {
+		return srv.(VolumesServer).Update(ctx, req.(*VolumesUpdateRequest))
+	}
+	return interceptor(ctx, in, info, handler)
+}
+
+func _Volumes_Delete_Handler(srv interface{}, ctx context.Context, dec func(interface{}) error, interceptor grpc.UnaryServerInterceptor) (interface{}, error) {
+	in := new(VolumesDeleteRequest)
+	if err := dec(in); err != nil {
+		return nil, err
+	}
+	if interceptor == nil {
+		return srv.(VolumesServer).Delete(ctx, in)
+	}
+	info := &grpc.UnaryServerInfo{
+		Server:     srv,
+		FullMethod: Volumes_Delete_FullMethodName,
+	}
+	handler := func(ctx context.Context, req interface{}) (interface{}, error) {
+		return srv.(VolumesServer).Delete(ctx, req.(*VolumesDeleteRequest))
+	}
+	return interceptor(ctx, in, info, handler)
+}
+
+func _Volumes_Signal_Handler(srv interface{}, ctx context.Context, dec func(interface{}) error, interceptor grpc.UnaryServerInterceptor) (interface{}, error) {
+	in := new(VolumesSignalRequest)
+	if err := dec(in); err != nil {
+		return nil, err
+	}
+	if interceptor == nil {
+		return srv.(VolumesServer).Signal(ctx, in)
+	}
+	info := &grpc.UnaryServerInfo{
+		Server:     srv,
+		FullMethod: Volumes_Signal_FullMethodName,
+	}
+	handler := func(ctx context.Context, req interface{}) (interface{}, error) {
+		return srv.(VolumesServer).Signal(ctx, req.(*VolumesSignalRequest))
+	}
+	return interceptor(ctx, in, info, handler)
+}
+
+// Volumes_ServiceDesc is the grpc.ServiceDesc for Volumes service.
+// It's only intended for direct use with grpc.RegisterService,
+// and not to be introspected or modified (even as a copy)
+var Volumes_ServiceDesc = grpc.ServiceDesc{
+	ServiceName: "osac.private.v1.Volumes",
+	HandlerType: (*VolumesServer)(nil),
+	Methods: []grpc.MethodDesc{
+		{
+			MethodName: "List",
+			Handler:    _Volumes_List_Handler,
+		},
+		{
+			MethodName: "Get",
+			Handler:    _Volumes_Get_Handler,
+		},
+		{
+			MethodName: "Create",
+			Handler:    _Volumes_Create_Handler,
+		},
+		{
+			MethodName: "Update",
+			Handler:    _Volumes_Update_Handler,
+		},
+		{
+			MethodName: "Delete",
+			Handler:    _Volumes_Delete_Handler,
+		},
+		{
+			MethodName: "Signal",
+			Handler:    _Volumes_Signal_Handler,
+		},
+	},
+	Streams:  []grpc.StreamDesc{},
+	Metadata: "osac/private/v1/volumes_service.proto",
+}
diff --git a/fulfillment-service/internal/api/osac/private/v1/volumes_service_protoopaque.pb.go b/fulfillment-service/internal/api/osac/private/v1/volumes_service_protoopaque.pb.go
new file mode 100644
index 000000000..c4cac5fb4
--- /dev/null
+++ b/fulfillment-service/internal/api/osac/private/v1/volumes_service_protoopaque.pb.go
@@ -0,0 +1,1170 @@
+//
+// Copyright (c) 2026 Red Hat, Inc.
+//
+// Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with
+// the License. You may obtain a copy of the License at
+//
+//   http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on
+// an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the
+// specific language governing permissions and limitations under the License.
+//
+
+// Code generated by protoc-gen-go. DO NOT EDIT.
+// versions:
+// 	protoc-gen-go v1.36.5
+// 	protoc        (unknown)
+// source: osac/private/v1/volumes_service.proto
+
+//go:build protoopaque
+
+package privatev1
+
+import (
+	_ "google.golang.org/genproto/googleapis/api/annotations"
+	protoreflect "google.golang.org/protobuf/reflect/protoreflect"
+	protoimpl "google.golang.org/protobuf/runtime/protoimpl"
+	fieldmaskpb "google.golang.org/protobuf/types/known/fieldmaskpb"
+	reflect "reflect"
+	unsafe "unsafe"
+)
+
+const (
+	// Verify that this generated code is sufficiently up-to-date.
+	_ = protoimpl.EnforceVersion(20 - protoimpl.MinVersion)
+	// Verify that runtime/protoimpl is sufficiently up-to-date.
+	_ = protoimpl.EnforceVersion(protoimpl.MaxVersion - 20)
+)
+
+type VolumesListRequest struct {
+	state                  protoimpl.MessageState `protogen:"opaque.v1"`
+	xxx_hidden_Offset      int32                  `protobuf:"varint,1,opt,name=offset,proto3,oneof"`
+	xxx_hidden_Limit       int32                  `protobuf:"varint,2,opt,name=limit,proto3,oneof"`
+	xxx_hidden_Filter      *string                `protobuf:"bytes,3,opt,name=filter,proto3,oneof"`
+	xxx_hidden_Order       *string                `protobuf:"bytes,4,opt,name=order,proto3,oneof"`
+	XXX_raceDetectHookData protoimpl.RaceDetectHookData
+	XXX_presence           [1]uint32
+	unknownFields          protoimpl.UnknownFields
+	sizeCache              protoimpl.SizeCache
+}
+
+func (x *VolumesListRequest) Reset() {
+	*x = VolumesListRequest{}
+	mi := &file_osac_private_v1_volumes_service_proto_msgTypes[0]
+	ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+	ms.StoreMessageInfo(mi)
+}
+
+func (x *VolumesListRequest) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*VolumesListRequest) ProtoMessage() {}
+
+func (x *VolumesListRequest) ProtoReflect() protoreflect.Message {
+	mi := &file_osac_private_v1_volumes_service_proto_msgTypes[0]
+	if x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+func (x *VolumesListRequest) GetOffset() int32 {
+	if x != nil {
+		return x.xxx_hidden_Offset
+	}
+	return 0
+}
+
+func (x *VolumesListRequest) GetLimit() int32 {
+	if x != nil {
+		return x.xxx_hidden_Limit
+	}
+	return 0
+}
+
+func (x *VolumesListRequest) GetFilter() string {
+	if x != nil {
+		if x.xxx_hidden_Filter != nil {
+			return *x.xxx_hidden_Filter
+		}
+		return ""
+	}
+	return ""
+}
+
+func (x *VolumesListRequest) GetOrder() string {
+	if x != nil {
+		if x.xxx_hidden_Order != nil {
+			return *x.xxx_hidden_Order
+		}
+		return ""
+	}
+	return ""
+}
+
+func (x *VolumesListRequest) SetOffset(v int32) {
+	x.xxx_hidden_Offset = v
+	protoimpl.X.SetPresent(&(x.XXX_presence[0]), 0, 4)
+}
+
+func (x *VolumesListRequest) SetLimit(v int32) {
+	x.xxx_hidden_Limit = v
+	protoimpl.X.SetPresent(&(x.XXX_presence[0]), 1, 4)
+}
+
+func (x *VolumesListRequest) SetFilter(v string) {
+	x.xxx_hidden_Filter = &v
+	protoimpl.X.SetPresent(&(x.XXX_presence[0]), 2, 4)
+}
+
+func (x *VolumesListRequest) SetOrder(v string) {
+	x.xxx_hidden_Order = &v
+	protoimpl.X.SetPresent(&(x.XXX_presence[0]), 3, 4)
+}
+
+func (x *VolumesListRequest) HasOffset() bool {
+	if x == nil {
+		return false
+	}
+	return protoimpl.X.Present(&(x.XXX_presence[0]), 0)
+}
+
+func (x *VolumesListRequest) HasLimit() bool {
+	if x == nil {
+		return false
+	}
+	return protoimpl.X.Present(&(x.XXX_presence[0]), 1)
+}
+
+func (x *VolumesListRequest) HasFilter() bool {
+	if x == nil {
+		return false
+	}
+	return protoimpl.X.Present(&(x.XXX_presence[0]), 2)
+}
+
+func (x *VolumesListRequest) HasOrder() bool {
+	if x == nil {
+		return false
+	}
+	return protoimpl.X.Present(&(x.XXX_presence[0]), 3)
+}
+
+func (x *VolumesListRequest) ClearOffset() {
+	protoimpl.X.ClearPresent(&(x.XXX_presence[0]), 0)
+	x.xxx_hidden_Offset = 0
+}
+
+func (x *VolumesListRequest) ClearLimit() {
+	protoimpl.X.ClearPresent(&(x.XXX_presence[0]), 1)
+	x.xxx_hidden_Limit = 0
+}
+
+func (x *VolumesListRequest) ClearFilter() {
+	protoimpl.X.ClearPresent(&(x.XXX_presence[0]), 2)
+	x.xxx_hidden_Filter = nil
+}
+
+func (x *VolumesListRequest) ClearOrder() {
+	protoimpl.X.ClearPresent(&(x.XXX_presence[0]), 3)
+	x.xxx_hidden_Order = nil
+}
+
+type VolumesListRequest_builder struct {
+	_ [0]func() // Prevents comparability and use of unkeyed literals for the builder.
+
+	// Index of the first result. If not specified the default value will be zero.
+	Offset *int32
+	// Maximum number of results to be returned by the server. When not specified all the results will be returned. Note
+	// that there may not be enough results to return, and that the server may decide, for performance reasons, to return
+	// less results than requested.
+	Limit *int32
+	// Filter criteria.
+	//
+	// The value of this parameter is a [CEL](https://cel.dev) expression used to select which objects to return. The
+	// built-in `this` variable refers to the object being tested and `now` refers to the current date and time. If the
+	// expression evaluates to `true` the object is included in the results. For example, to retrieve all volumes in the
+	// AVAILABLE state:
+	//
+	//	this.status.state == 2
+	//
+	// If this isn't provided, or if the value is empty, then all the volumes that the user has permission to see will be
+	// returned. Not all CEL constructs are currently supported for implementation reasons; see the filter documentation
+	// (docs/FILTER.md) for the full details.
+	Filter *string
+	// Order criteria.
+	//
+	// The syntax of this parameter is similar to the syntax of the _order by_ clause of a SQL statement, but using the
+	// names of the attributes of the volume instead of the names of the columns of a table. For example, in order to
+	// sort the volumes descending by size:
+	//
+	//	spec.size_gib desc
+	//
+	// If the parameter isn't provided, or if the value is empty, then the order of the results is undefined.
+	Order *string
+}
+
+func (b0 VolumesListRequest_builder) Build() *VolumesListRequest {
+	m0 := &VolumesListRequest{}
+	b, x := &b0, m0
+	_, _ = b, x
+	if b.Offset != nil {
+		protoimpl.X.SetPresentNonAtomic(&(x.XXX_presence[0]), 0, 4)
+		x.xxx_hidden_Offset = *b.Offset
+	}
+	if b.Limit != nil {
+		protoimpl.X.SetPresentNonAtomic(&(x.XXX_presence[0]), 1, 4)
+		x.xxx_hidden_Limit = *b.Limit
+	}
+	if b.Filter != nil {
+		protoimpl.X.SetPresentNonAtomic(&(x.XXX_presence[0]), 2, 4)
+		x.xxx_hidden_Filter = b.Filter
+	}
+	if b.Order != nil {
+		protoimpl.X.SetPresentNonAtomic(&(x.XXX_presence[0]), 3, 4)
+		x.xxx_hidden_Order = b.Order
+	}
+	return m0
+}
+
+type VolumesListResponse struct {
+	state            protoimpl.MessageState `protogen:"opaque.v1"`
+	xxx_hidden_Size  int32                  `protobuf:"varint,1,opt,name=size,proto3"`
+	xxx_hidden_Total int32                  `protobuf:"varint,2,opt,name=total,proto3"`
+	xxx_hidden_Items *[]*Volume             `protobuf:"bytes,3,rep,name=items,proto3"`
+	unknownFields    protoimpl.UnknownFields
+	sizeCache        protoimpl.SizeCache
+}
+
+func (x *VolumesListResponse) Reset() {
+	*x = VolumesListResponse{}
+	mi := &file_osac_private_v1_volumes_service_proto_msgTypes[1]
+	ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+	ms.StoreMessageInfo(mi)
+}
+
+func (x *VolumesListResponse) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*VolumesListResponse) ProtoMessage() {}
+
+func (x *VolumesListResponse) ProtoReflect() protoreflect.Message {
+	mi := &file_osac_private_v1_volumes_service_proto_msgTypes[1]
+	if x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
+func (x *VolumesListResponse) GetSize() int32 {
+	if x != nil {
+		return x.xxx_hidden_Size
+	}
+	return 0
+}
+
+func (x *VolumesListResponse) GetTotal() int32 {
+	if x != nil {
+		return x.xxx_hidden_Total
+	}
+	return 0
+}
+
+func (x *VolumesListResponse) GetItems() []*Volume {
+	if x != nil {
+		if x.xxx_hidden_Items != nil {
+			return *x.xxx_hidden_Items
+		}
+	}
+	return nil
+}
+
+func (x *VolumesListResponse) SetSize(v int32) {
+	x.xxx_hidden_Size = v
+}
+
+func (x *VolumesListResponse) SetTotal(v int32) {
+	x.xxx_hidden_Total = v
+}
+
+func (x *VolumesListResponse) SetItems(v []*Volume) {
+	x.xxx_hidden_Items = &v
+}
+
+type VolumesListResponse_builder struct {
+	_ [0]func() // Prevents comparability and use of unkeyed literals for the builder.
+
+	// Actual number of items returned. Note that this may be smaller than the value requested in the `limit` parameter
+	// of the request if there are not enough items, or if the system decides that returning that number of items isn't
+	// feasible or convenient for performance reasons.
+	Size int32
+	// Total number of items of the collection that match the search criteria, regardless of the number of results
+	// requested with the `limit` parameter.
+	Total int32
+	// List of results.
+	Items []*Volume
+}
+
+func (b0 VolumesListResponse_builder) Build() *VolumesListResponse {
+	m0 := &VolumesListResponse{}
+	b, x := &b0, m0
+	_, _ = b, x
+	x.xxx_hidden_Size = b.Size
+	x.xxx_hidden_Total = b.Total
+	x.xxx_hidden_Items = &b.Items
+	return m0
+}
+
+type VolumesGetRequest struct {
+	state         protoimpl.MessageState `protogen:"opaque.v1"`
+	xxx_hidden_Id string                 `protobuf:"bytes,1,opt,name=id,proto3"`
+	unknownFields protoimpl.UnknownFields
+	sizeCache     protoimpl.SizeCache
+}
+
+func (x *VolumesGetRequest) Reset() {
+	*x = VolumesGetRequest{}
+	mi := &file_osac_private_v1_volumes_service_proto_msgTypes[2]
+	ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+	ms.StoreMessageInfo(mi)
+}
+
+func (x *VolumesGetRequest) String() string {
+	return protoimpl.X.MessageStringOf(x)
+}
+
+func (*VolumesGetRequest) ProtoMessage() {}
+
+func (x *VolumesGetRequest) ProtoReflect() protoreflect.Message {
+	mi := &file_osac_private_v1_volumes_service_proto_msgTypes[2]
+	if x != nil {
+		ms := protoimpl.X.MessageStateOf(protoimpl.Pointer(x))
+		if ms.LoadMessageInfo() == nil {
+			ms.StoreMessageInfo(mi)
+		}
+		return ms
+	}
+	return mi.MessageOf(x)
+}
+
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+}
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+	if x != nil {
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+}
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+	Object     *Volume
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+	// Lock enables optimistic locking. When set to true, the server verifies that the current version of the object
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+}
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+}
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+}
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+})
+
+var file_osac_private_v1_volumes_service_proto_msgTypes = make([]protoimpl.MessageInfo, 12)
+var file_osac_private_v1_volumes_service_proto_goTypes = []any{
+	(*VolumesListRequest)(nil),    // 0: osac.private.v1.VolumesListRequest
+	(*VolumesListResponse)(nil),   // 1: osac.private.v1.VolumesListResponse
+	(*VolumesGetRequest)(nil),     // 2: osac.private.v1.VolumesGetRequest
+	(*VolumesGetResponse)(nil),    // 3: osac.private.v1.VolumesGetResponse
+	(*VolumesCreateRequest)(nil),  // 4: osac.private.v1.VolumesCreateRequest
+	(*VolumesCreateResponse)(nil), // 5: osac.private.v1.VolumesCreateResponse
+	(*VolumesUpdateRequest)(nil),  // 6: osac.private.v1.VolumesUpdateRequest
+	(*VolumesUpdateResponse)(nil), // 7: osac.private.v1.VolumesUpdateResponse
+	(*VolumesDeleteRequest)(nil),  // 8: osac.private.v1.VolumesDeleteRequest
+	(*VolumesDeleteResponse)(nil), // 9: osac.private.v1.VolumesDeleteResponse
+	(*VolumesSignalRequest)(nil),  // 10: osac.private.v1.VolumesSignalRequest
+	(*VolumesSignalResponse)(nil), // 11: osac.private.v1.VolumesSignalResponse
+	(*Volume)(nil),                // 12: osac.private.v1.Volume
+	(*fieldmaskpb.FieldMask)(nil), // 13: google.protobuf.FieldMask
+}
+var file_osac_private_v1_volumes_service_proto_depIdxs = []int32{
+	12, // 0: osac.private.v1.VolumesListResponse.items:type_name -> osac.private.v1.Volume
+	12, // 1: osac.private.v1.VolumesGetResponse.object:type_name -> osac.private.v1.Volume
+	12, // 2: osac.private.v1.VolumesCreateRequest.object:type_name -> osac.private.v1.Volume
+	12, // 3: osac.private.v1.VolumesCreateResponse.object:type_name -> osac.private.v1.Volume
+	12, // 4: osac.private.v1.VolumesUpdateRequest.object:type_name -> osac.private.v1.Volume
+	13, // 5: osac.private.v1.VolumesUpdateRequest.update_mask:type_name -> google.protobuf.FieldMask
+	12, // 6: osac.private.v1.VolumesUpdateResponse.object:type_name -> osac.private.v1.Volume
+	0,  // 7: osac.private.v1.Volumes.List:input_type -> osac.private.v1.VolumesListRequest
+	2,  // 8: osac.private.v1.Volumes.Get:input_type -> osac.private.v1.VolumesGetRequest
+	4,  // 9: osac.private.v1.Volumes.Create:input_type -> osac.private.v1.VolumesCreateRequest
+	6,  // 10: osac.private.v1.Volumes.Update:input_type -> osac.private.v1.VolumesUpdateRequest
+	8,  // 11: osac.private.v1.Volumes.Delete:input_type -> osac.private.v1.VolumesDeleteRequest
+	10, // 12: osac.private.v1.Volumes.Signal:input_type -> osac.private.v1.VolumesSignalRequest
+	1,  // 13: osac.private.v1.Volumes.List:output_type -> osac.private.v1.VolumesListResponse
+	3,  // 14: osac.private.v1.Volumes.Get:output_type -> osac.private.v1.VolumesGetResponse
+	5,  // 15: osac.private.v1.Volumes.Create:output_type -> osac.private.v1.VolumesCreateResponse
+	7,  // 16: osac.private.v1.Volumes.Update:output_type -> osac.private.v1.VolumesUpdateResponse
+	9,  // 17: osac.private.v1.Volumes.Delete:output_type -> osac.private.v1.VolumesDeleteResponse
+	11, // 18: osac.private.v1.Volumes.Signal:output_type -> osac.private.v1.VolumesSignalResponse
+	13, // [13:19] is the sub-list for method output_type
+	7,  // [7:13] is the sub-list for method input_type
+	7,  // [7:7] is the sub-list for extension type_name
+	7,  // [7:7] is the sub-list for extension extendee
+	0,  // [0:7] is the sub-list for field type_name
+}
+
+func init() { file_osac_private_v1_volumes_service_proto_init() }
+func file_osac_private_v1_volumes_service_proto_init() {
+	if File_osac_private_v1_volumes_service_proto != nil {
+		return
+	}
+	file_osac_private_v1_volume_type_proto_init()
+	file_osac_private_v1_volumes_service_proto_msgTypes[0].OneofWrappers = []any{}
+	type x struct{}
+	out := protoimpl.TypeBuilder{
+		File: protoimpl.DescBuilder{
+			GoPackagePath: reflect.TypeOf(x{}).PkgPath(),
+			RawDescriptor: unsafe.Slice(unsafe.StringData(file_osac_private_v1_volumes_service_proto_rawDesc), len(file_osac_private_v1_volumes_service_proto_rawDesc)),
+			NumEnums:      0,
+			NumMessages:   12,
+			NumExtensions: 0,
+			NumServices:   1,
+		},
+		GoTypes:           file_osac_private_v1_volumes_service_proto_goTypes,
+		DependencyIndexes: file_osac_private_v1_volumes_service_proto_depIdxs,
+		MessageInfos:      file_osac_private_v1_volumes_service_proto_msgTypes,
+	}.Build()
+	File_osac_private_v1_volumes_service_proto = out.File
+	file_osac_private_v1_volumes_service_proto_goTypes = nil
+	file_osac_private_v1_volumes_service_proto_depIdxs = nil
+}
diff --git a/fulfillment-service/internal/cmd/service/start/grpcserver/start_grpc_server_cmd.go b/fulfillment-service/internal/cmd/service/start/grpcserver/start_grpc_server_cmd.go
index 6e252e753..af885225e 100644
--- a/fulfillment-service/internal/cmd/service/start/grpcserver/start_grpc_server_cmd.go
+++ b/fulfillment-service/internal/cmd/service/start/grpcserver/start_grpc_server_cmd.go
@@ -1184,6 +1184,20 @@ func (c *runnerContext) run(cmd *cobra.Command, argv []string) error { //nolint:
 	}
 	privatev1.RegisterStorageTiersServer(grpcServer, privateStorageTiersServer)
 
+	// Create the private volumes server:
+	c.logger.InfoContext(ctx, "Creating private volumes server")
+	privateVolumesServer, err := servers.NewPrivateVolumesServer().
+		SetLogger(c.logger).
+		SetNotifier(notifier).
+		SetAttributionLogic(privateAttributionLogic).
+		SetTenancyLogic(tenancyLogic).
+		SetMetricsRegisterer(metricsRegisterer).
+		Build()
+	if err != nil {
+		return fmt.Errorf("failed to create private volumes server: %w", err)
+	}
+	privatev1.RegisterVolumesServer(grpcServer, privateVolumesServer)
+
 	// Create the roles server:
 	c.logger.InfoContext(ctx, "Creating roles server")
 	rolesServer, err := servers.NewRolesServer().
diff --git a/fulfillment-service/internal/cmd/service/start/restgateway/start_rest_gateway_cmd.go b/fulfillment-service/internal/cmd/service/start/restgateway/start_rest_gateway_cmd.go
index 259081d7c..296cc3525 100644
--- a/fulfillment-service/internal/cmd/service/start/restgateway/start_rest_gateway_cmd.go
+++ b/fulfillment-service/internal/cmd/service/start/restgateway/start_rest_gateway_cmd.go
@@ -333,6 +333,7 @@ func (c *runnerContext) registerHandlers(ctx context.Context, mux *runtime.Serve
 		privatev1.RegisterSecretsHandler,
 		privatev1.RegisterStorageBackendsHandler,
 		privatev1.RegisterStorageTiersHandler,
+		privatev1.RegisterVolumesHandler,
 		privatev1.RegisterVirtualNetworksHandler,
 		privatev1.RegisterSubnetsHandler,
 		privatev1.RegisterSecurityGroupsHandler,
diff --git a/fulfillment-service/internal/database/migrations.sha256 b/fulfillment-service/internal/database/migrations.sha256
index eb6b9f0ed..3a7edf4bd 100644
--- a/fulfillment-service/internal/database/migrations.sha256
+++ b/fulfillment-service/internal/database/migrations.sha256
@@ -1 +1 @@
-1de074f524ec38334110b1d474ff41be8c1f13b46af459445e74a698d4319241
+0c15ed8b1750de64615204d2626b62ae0218eb8cb58d00d7878dd334923116d4
diff --git a/fulfillment-service/internal/database/migrations/95_create_volumes_tables.up.sql b/fulfillment-service/internal/database/migrations/95_create_volumes_tables.up.sql
new file mode 100644
index 000000000..014801c3f
--- /dev/null
+++ b/fulfillment-service/internal/database/migrations/95_create_volumes_tables.up.sql
@@ -0,0 +1,75 @@
+--
+-- Copyright (c) 2026 Red Hat Inc.
+--
+-- Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with
+-- the License. You may obtain a copy of the License at
+--
+--   http://www.apache.org/licenses/LICENSE-2.0
+--
+-- Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an
+-- "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the
+-- specific language governing permissions and limitations under the License.
+--
+
+-- Create tables for Volume resources.
+--
+-- Volume is a tenant-scoped resource that represents block storage provisioned on a backend
+-- storage array through the OSAC CSI driver. The fulfillment-service tracks volume inventory
+-- and the osac-operator Volume controller handles vendor provisioning.
+
+create table volumes (
+  id text not null primary key,
+  name text not null default '',
+  creation_timestamp timestamp with time zone not null default now(),
+  deletion_timestamp timestamp with time zone not null default 'epoch',
+  finalizers text[] not null default '{}',
+  creator text not null default '',
+  tenant text not null default '',
+  project ltree not null default ''::ltree,
+  labels jsonb not null default '{}'::jsonb,
+  annotations jsonb not null default '{}'::jsonb,
+  data jsonb not null,
+  version integer not null default 0
+);
+
+create table archived_volumes (
+  id text not null,
+  name text not null default '',
+  creation_timestamp timestamp with time zone not null,
+  deletion_timestamp timestamp with time zone not null,
+  archival_timestamp timestamp with time zone not null default now(),
+  creator text not null default '',
+  tenant text not null default '',
+  project ltree not null default ''::ltree,
+  labels jsonb not null default '{}'::jsonb,
+  annotations jsonb not null default '{}'::jsonb,
+  data jsonb not null,
+  version integer not null default 0
+);
+
+create index volumes_by_name on volumes (name);
+create index volumes_by_creator on volumes (creator);
+create index volumes_by_tenant on volumes (tenant);
+create index volumes_by_label on volumes using gin (labels);
+
+-- Unique name per tenant on active records only.
+create unique index volumes_unique_name_per_tenant
+  on volumes (name, tenant)
+  where deletion_timestamp = 'epoch'
+    and name != '';
+
+-- Tenant foreign key referencing the tenants table.
+alter table volumes
+  add constraint volumes_tenant_fk
+  foreign key (tenant) references tenants (name);
+
+-- Project foreign key.
+alter table volumes
+  add constraint volumes_project_fk
+  foreign key (tenant, project) references projects (tenant, name);
+
+-- Enforce immutability of id, tenant, and project columns at the database level.
+create trigger check_immutable_columns
+  before update on volumes
+  for each row
+  execute function check_immutable_columns('id', 'name', 'tenant', 'project');
diff --git a/fulfillment-service/internal/database/migrations/95_create_volumes_tables_test.go b/fulfillment-service/internal/database/migrations/95_create_volumes_tables_test.go
new file mode 100644
index 000000000..d8dc1d7f0
--- /dev/null
+++ b/fulfillment-service/internal/database/migrations/95_create_volumes_tables_test.go
@@ -0,0 +1,195 @@
+/*
+Copyright (c) 2026 Red Hat Inc.
+
+Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the
+License. You may obtain a copy of the License at
+
+  http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an
+"AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific
+language governing permissions and limitations under the License.
+*/
+
+package migrations
+
+import (
+	"context"
+	"errors"
+	"fmt"
+
+	"github.com/jackc/pgx/v5"
+	"github.com/jackc/pgx/v5/pgconn"
+	. "github.com/onsi/ginkgo/v2/dsl/core"
+	. "github.com/onsi/ginkgo/v2/dsl/table"
+	. "github.com/onsi/gomega"
+)
+
+var _ = DescribeMigration("Create volumes tables", func() {
+	DescribeTable(
+		"Creates the expected tables",
+		func(ctx context.Context, table string) {
+			err := tool.Migrate(ctx, 95)
+			Expect(err).ToNot(HaveOccurred())
+
+			quotedTable := pgx.Identifier{table}.Sanitize()
+
+			_, err = conn.Exec(ctx,
+				fmt.Sprintf(`insert into %s (id, tenant, data) values ($1, $2, $3)`, quotedTable),
+				"test-id", "system", `{}`,
+			)
+			Expect(err).ToNot(HaveOccurred())
+
+			var count int
+			err = conn.QueryRow(ctx,
+				fmt.Sprintf(`select count(*) from %s where id = $1`, quotedTable),
+				"test-id",
+			).Scan(&count)
+			Expect(err).ToNot(HaveOccurred())
+			Expect(count).To(Equal(1))
+		},
+		Entry("volumes", "volumes"),
+	)
+
+	It("Creates the archived_volumes table", func(ctx context.Context) {
+		err := tool.Migrate(ctx, 95)
+		Expect(err).ToNot(HaveOccurred())
+
+		_, err = conn.Exec(ctx,
+			`insert into archived_volumes (id, tenant, creation_timestamp, deletion_timestamp, data)
+			 values ($1, $2, now(), now(), $3)`,
+			"test-id", "system", `{}`,
+		)
+		Expect(err).ToNot(HaveOccurred())
+
+		var count int
+		err = conn.QueryRow(ctx,
+			`select count(*) from archived_volumes where id = $1`,
+			"test-id",
+		).Scan(&count)
+		Expect(err).ToNot(HaveOccurred())
+		Expect(count).To(Equal(1))
+	})
+
+	It("Rejects invalid tenant reference", func(ctx context.Context) {
+		err := tool.Migrate(ctx, 95)
+		Expect(err).ToNot(HaveOccurred())
+
+		_, err = conn.Exec(ctx,
+			`insert into volumes (id, tenant, data) values ($1, $2, $3)`,
+			"bad-tenant-id", "no-such-tenant", `{}`,
+		)
+		Expect(err).To(HaveOccurred())
+	})
+
+	It("Enforces name uniqueness per tenant", func(ctx context.Context) {
+		err := tool.Migrate(ctx, 95)
+		Expect(err).ToNot(HaveOccurred())
+
+		_, err = conn.Exec(ctx,
+			`insert into volumes (id, name, tenant, data) values ($1, $2, $3, $4)`,
+			"id-1", "my-volume", "system", `{}`,
+		)
+		Expect(err).ToNot(HaveOccurred())
+
+		_, err = conn.Exec(ctx,
+			`insert into volumes (id, name, tenant, data) values ($1, $2, $3, $4)`,
+			"id-2", "my-volume", "system", `{}`,
+		)
+		Expect(err).To(HaveOccurred())
+		var pgErr *pgconn.PgError
+		Expect(errors.As(err, &pgErr)).To(BeTrue())
+		Expect(pgErr.Code).To(Equal("23505"))
+	})
+
+	It("Allows same name in different tenants", func(ctx context.Context) {
+		err := tool.Migrate(ctx, 95)
+		Expect(err).ToNot(HaveOccurred())
+
+		_, err = conn.Exec(ctx,
+			`insert into tenants (id, name, tenant, data) values ($1, $2, $3, $4)`,
+			"tenant-2", "tenant-2", "tenant-2", `{}`,
+		)
+		Expect(err).ToNot(HaveOccurred())
+
+		_, err = conn.Exec(ctx,
+			`insert into volumes (id, name, tenant, data) values ($1, $2, $3, $4)`,
+			"id-3", "shared-name", "system", `{}`,
+		)
+		Expect(err).ToNot(HaveOccurred())
+
+		_, err = conn.Exec(ctx,
+			`insert into volumes (id, name, tenant, data) values ($1, $2, $3, $4)`,
+			"id-4", "shared-name", "tenant-2", `{}`,
+		)
+		Expect(err).ToNot(HaveOccurred())
+	})
+
+	It("Allows same name after soft delete", func(ctx context.Context) {
+		err := tool.Migrate(ctx, 95)
+		Expect(err).ToNot(HaveOccurred())
+
+		_, err = conn.Exec(ctx,
+			`insert into volumes (id, name, tenant, data) values ($1, $2, $3, $4)`,
+			"id-5", "reusable-name", "system", `{}`,
+		)
+		Expect(err).ToNot(HaveOccurred())
+
+		_, err = conn.Exec(ctx,
+			`update volumes set deletion_timestamp = now() where id = $1`,
+			"id-5",
+		)
+		Expect(err).ToNot(HaveOccurred())
+
+		_, err = conn.Exec(ctx,
+			`insert into volumes (id, name, tenant, data) values ($1, $2, $3, $4)`,
+			"id-6", "reusable-name", "system", `{}`,
+		)
+		Expect(err).ToNot(HaveOccurred())
+	})
+
+	It("Enforces immutability of id, name, tenant, and project", func(ctx context.Context) {
+		err := tool.Migrate(ctx, 95)
+		Expect(err).ToNot(HaveOccurred())
+
+		_, err = conn.Exec(ctx,
+			`insert into volumes (id, name, tenant, data) values ($1, $2, $3, $4)`,
+			"immutable-id", "immutable-vol", "system", `{}`,
+		)
+		Expect(err).ToNot(HaveOccurred())
+
+		var pgErr *pgconn.PgError
+
+		_, err = conn.Exec(ctx,
+			`update volumes set id = $1 where id = $2`,
+			"changed-id", "immutable-id",
+		)
+		Expect(err).To(HaveOccurred())
+		Expect(errors.As(err, &pgErr)).To(BeTrue())
+		Expect(pgErr.Code).To(Equal("Z0001"))
+
+		_, err = conn.Exec(ctx,
+			`update volumes set name = $1 where id = $2`,
+			"changed-name", "immutable-id",
+		)
+		Expect(err).To(HaveOccurred())
+		Expect(errors.As(err, &pgErr)).To(BeTrue())
+		Expect(pgErr.Code).To(Equal("Z0001"))
+
+		_, err = conn.Exec(ctx,
+			`update volumes set tenant = $1 where id = $2`,
+			"other-tenant", "immutable-id",
+		)
+		Expect(err).To(HaveOccurred())
+		Expect(errors.As(err, &pgErr)).To(BeTrue())
+		Expect(pgErr.Code).To(Equal("Z0001"))
+
+		_, err = conn.Exec(ctx,
+			`update volumes set project = $1 where id = $2`,
+			"other-project", "immutable-id",
+		)
+		Expect(err).To(HaveOccurred())
+		Expect(errors.As(err, &pgErr)).To(BeTrue())
+		Expect(pgErr.Code).To(Equal("Z0001"))
+	})
+})
diff --git a/fulfillment-service/internal/rendering/tables/osac.private.v1.Volume.yaml b/fulfillment-service/internal/rendering/tables/osac.private.v1.Volume.yaml
new file mode 100644
index 000000000..8261762a9
--- /dev/null
+++ b/fulfillment-service/internal/rendering/tables/osac.private.v1.Volume.yaml
@@ -0,0 +1,36 @@
+#
+# Copyright (c) 2026 Red Hat Inc.
+#
+# Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with
+# the License. You may obtain a copy of the License at
+#
+#   http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an
+# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the
+# specific language governing permissions and limitations under the License.
+#
+
+columns:
+
+- header: ID
+  value: this.id
+
+- header: NAME
+  value: "has(this.metadata.name)? this.metadata.name: '-'"
+
+- header: TENANT
+  value: "has(this.metadata.tenant)? this.metadata.tenant: '-'"
+
+- header: TIER
+  value: "has(this.spec.storage_tier)? this.spec.storage_tier: '-'"
+
+- header: SIZE (GIB)
+  value: "has(this.spec.size_gib)? string(this.spec.size_gib): '-'"
+
+- header: BACKEND
+  value: "has(this.status.backend) && this.status.backend != ''? this.status.backend: '-'"
+
+- header: STATE
+  value: this.status.state
+  type: osac.private.v1.VolumeState
diff --git a/fulfillment-service/internal/servers/private_volumes_server.go b/fulfillment-service/internal/servers/private_volumes_server.go
new file mode 100644
index 000000000..20389e9fa
--- /dev/null
+++ b/fulfillment-service/internal/servers/private_volumes_server.go
@@ -0,0 +1,176 @@
+/*
+Copyright (c) 2026 Red Hat Inc.
+
+Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the
+License. You may obtain a copy of the License at
+
+  http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an
+"AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific
+language governing permissions and limitations under the License.
+*/
+
+package servers
+
+import (
+	"context"
+	"errors"
+	"log/slog"
+
+	"github.com/prometheus/client_golang/prometheus"
+	grpccodes "google.golang.org/grpc/codes"
+	grpcstatus "google.golang.org/grpc/status"
+
+	privatev1 "github.com/osac-project/osac/fulfillment-service/internal/api/osac/private/v1"
+	"github.com/osac-project/osac/fulfillment-service/internal/auth"
+	"github.com/osac-project/osac/fulfillment-service/internal/events"
+)
+
+type PrivateVolumesServerBuilder struct {
+	logger            *slog.Logger
+	notifier          events.Notifier
+	attributionLogic  auth.AttributionLogic
+	tenancyLogic      auth.TenancyLogic
+	metricsRegisterer prometheus.Registerer
+}
+
+var _ privatev1.VolumesServer = (*PrivateVolumesServer)(nil)
+
+type PrivateVolumesServer struct {
+	privatev1.UnimplementedVolumesServer
+
+	logger  *slog.Logger
+	generic *GenericServer[*privatev1.Volume]
+}
+
+func NewPrivateVolumesServer() *PrivateVolumesServerBuilder {
+	return &PrivateVolumesServerBuilder{}
+}
+
+func (b *PrivateVolumesServerBuilder) SetLogger(value *slog.Logger) *PrivateVolumesServerBuilder {
+	b.logger = value
+	return b
+}
+
+func (b *PrivateVolumesServerBuilder) SetNotifier(value events.Notifier) *PrivateVolumesServerBuilder {
+	b.notifier = value
+	return b
+}
+
+func (b *PrivateVolumesServerBuilder) SetAttributionLogic(value auth.AttributionLogic) *PrivateVolumesServerBuilder {
+	b.attributionLogic = value
+	return b
+}
+
+func (b *PrivateVolumesServerBuilder) SetTenancyLogic(value auth.TenancyLogic) *PrivateVolumesServerBuilder {
+	b.tenancyLogic = value
+	return b
+}
+
+func (b *PrivateVolumesServerBuilder) SetMetricsRegisterer(value prometheus.Registerer) *PrivateVolumesServerBuilder {
+	b.metricsRegisterer = value
+	return b
+}
+
+func (b *PrivateVolumesServerBuilder) Build() (result *PrivateVolumesServer, err error) {
+	if b.logger == nil {
+		err = errors.New("logger is mandatory")
+		return
+	}
+	if b.tenancyLogic == nil {
+		err = errors.New("tenancy logic is mandatory")
+		return
+	}
+
+	generic, err := NewGenericServer[*privatev1.Volume]().
+		SetLogger(b.logger).
+		SetService(privatev1.Volumes_ServiceDesc.ServiceName).
+		SetNotifier(b.notifier).
+		SetAttributionLogic(b.attributionLogic).
+		SetTenancyLogic(b.tenancyLogic).
+		SetMetricsRegisterer(b.metricsRegisterer).
+		Build()
+	if err != nil {
+		return
+	}
+
+	result = &PrivateVolumesServer{
+		logger:  b.logger,
+		generic: generic,
+	}
+	return
+}
+
+func (s *PrivateVolumesServer) List(ctx context.Context,
+	request *privatev1.VolumesListRequest) (response *privatev1.VolumesListResponse, err error) {
+	err = s.generic.List(ctx, request, &response)
+	return
+}
+
+func (s *PrivateVolumesServer) Get(ctx context.Context,
+	request *privatev1.VolumesGetRequest) (response *privatev1.VolumesGetResponse, err error) {
+	err = s.generic.Get(ctx, request, &response)
+	return
+}
+
+func (s *PrivateVolumesServer) Create(ctx context.Context,
+	request *privatev1.VolumesCreateRequest) (response *privatev1.VolumesCreateResponse, err error) {
+	vol := request.GetObject()
+
+	err = s.validateVolumeCreate(vol)
+	if err != nil {
+		return
+	}
+
+	if vol.GetStatus() == nil {
+		vol.SetStatus(&privatev1.VolumeStatus{})
+	}
+	vol.GetStatus().SetState(privatev1.VolumeState_VOLUME_STATE_CREATING)
+
+	vol.SetId("")
+
+	err = s.generic.Create(ctx, request, &response)
+	return
+}
+
+func (s *PrivateVolumesServer) validateVolumeCreate(vol *privatev1.Volume) error {
+	if vol == nil {
+		return grpcstatus.Errorf(grpccodes.InvalidArgument, "volume is mandatory")
+	}
+	if vol.GetMetadata() == nil || vol.GetMetadata().GetName() == "" {
+		return grpcstatus.Errorf(grpccodes.InvalidArgument, "field 'metadata.name' is required")
+	}
+	spec := vol.GetSpec()
+	if spec == nil {
+		return grpcstatus.Errorf(grpccodes.InvalidArgument, "field 'spec' is required")
+	}
+	if spec.GetStorageTier() == "" {
+		return grpcstatus.Errorf(grpccodes.InvalidArgument, "field 'spec.storage_tier' is required")
+	}
+	if spec.GetSizeGib() <= 0 {
+		return grpcstatus.Errorf(grpccodes.InvalidArgument, "field 'spec.size_gib' must be greater than zero")
+	}
+	if spec.GetAccessMode() == privatev1.VolumeAccessMode_VOLUME_ACCESS_MODE_UNSPECIFIED {
+		return grpcstatus.Errorf(grpccodes.InvalidArgument, "field 'spec.access_mode' is required")
+	}
+	return nil
+}
+
+func (s *PrivateVolumesServer) Update(ctx context.Context,
+	request *privatev1.VolumesUpdateRequest) (response *privatev1.VolumesUpdateResponse, err error) {
+	err = s.generic.Update(ctx, request, &response)
+	return
+}
+
+func (s *PrivateVolumesServer) Delete(ctx context.Context,
+	request *privatev1.VolumesDeleteRequest) (response *privatev1.VolumesDeleteResponse, err error) {
+	err = s.generic.Delete(ctx, request, &response)
+	return
+}
+
+func (s *PrivateVolumesServer) Signal(ctx context.Context,
+	request *privatev1.VolumesSignalRequest) (response *privatev1.VolumesSignalResponse, err error) {
+	err = s.generic.Signal(ctx, request, &response)
+	return
+}
diff --git a/fulfillment-service/internal/servers/private_volumes_server_test.go b/fulfillment-service/internal/servers/private_volumes_server_test.go
new file mode 100644
index 000000000..13bf1cb42
--- /dev/null
+++ b/fulfillment-service/internal/servers/private_volumes_server_test.go
@@ -0,0 +1,472 @@
+/*
+Copyright (c) 2026 Red Hat Inc.
+
+Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the
+License. You may obtain a copy of the License at
+
+  http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an
+"AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific
+language governing permissions and limitations under the License.
+*/
+
+package servers
+
+import (
+	"fmt"
+
+	"github.com/google/uuid"
+	. "github.com/onsi/ginkgo/v2"
+	. "github.com/onsi/gomega"
+	"google.golang.org/grpc/codes"
+	"google.golang.org/grpc/status"
+	"google.golang.org/protobuf/types/known/fieldmaskpb"
+
+	privatev1 "github.com/osac-project/osac/fulfillment-service/internal/api/osac/private/v1"
+)
+
+var _ = Describe("Private volumes server", func() {
+	Describe("Creation", func() {
+		It("Can be built if all the required parameters are set", func() {
+			server, err := NewPrivateVolumesServer().
+				SetLogger(logger).
+				SetAttributionLogic(attribution).
+				SetTenancyLogic(tenancy).
+				Build()
+			Expect(err).ToNot(HaveOccurred())
+			Expect(server).ToNot(BeNil())
+		})
+
+		It("Fails if logger is not set", func() {
+			server, err := NewPrivateVolumesServer().
+				SetAttributionLogic(attribution).
+				SetTenancyLogic(tenancy).
+				Build()
+			Expect(err).To(MatchError("logger is mandatory"))
+			Expect(server).To(BeNil())
+		})
+
+		It("Fails if tenancy logic is not set", func() {
+			server, err := NewPrivateVolumesServer().
+				SetLogger(logger).
+				SetAttributionLogic(attribution).
+				Build()
+			Expect(err).To(MatchError("tenancy logic is mandatory"))
+			Expect(server).To(BeNil())
+		})
+	})
+
+	Describe("Behaviour", func() {
+		var server *PrivateVolumesServer
+
+		BeforeEach(func() {
+			var err error
+			server, err = NewPrivateVolumesServer().
+				SetLogger(logger).
+				SetAttributionLogic(attribution).
+				SetTenancyLogic(tenancy).
+				Build()
+			Expect(err).ToNot(HaveOccurred())
+		})
+
+		createVolume := func() *privatev1.Volume {
+			response, err := server.Create(ctx, privatev1.VolumesCreateRequest_builder{
+				Object: privatev1.Volume_builder{
+					Metadata: privatev1.Metadata_builder{
+						Name: "test-volume",
+					}.Build(),
+					Spec: privatev1.VolumeSpec_builder{
+						StorageTier: "gold",
+						SizeGib:     100,
+						AccessMode:  privatev1.VolumeAccessMode_VOLUME_ACCESS_MODE_READ_WRITE_ONCE,
+					}.Build(),
+				}.Build(),
+			}.Build())
+			Expect(err).ToNot(HaveOccurred())
+			return response.GetObject()
+		}
+
+		createVolumeWithName := func(name string) *privatev1.Volume {
+			response, err := server.Create(ctx, privatev1.VolumesCreateRequest_builder{
+				Object: privatev1.Volume_builder{
+					Metadata: privatev1.Metadata_builder{
+						Name: name,
+					}.Build(),
+					Spec: privatev1.VolumeSpec_builder{
+						StorageTier: "gold",
+						SizeGib:     100,
+						AccessMode:  privatev1.VolumeAccessMode_VOLUME_ACCESS_MODE_READ_WRITE_ONCE,
+					}.Build(),
+				}.Build(),
+			}.Build())
+			Expect(err).ToNot(HaveOccurred())
+			return response.GetObject()
+		}
+
+		createStandaloneVolume := func() *privatev1.Volume {
+			response, err := server.Create(ctx, privatev1.VolumesCreateRequest_builder{
+				Object: privatev1.Volume_builder{
+					Metadata: privatev1.Metadata_builder{
+						Name: "standalone-volume",
+					}.Build(),
+					Spec: privatev1.VolumeSpec_builder{
+						StorageTier: "gold",
+						SizeGib:     50,
+						AccessMode:  privatev1.VolumeAccessMode_VOLUME_ACCESS_MODE_READ_WRITE_ONCE,
+					}.Build(),
+				}.Build(),
+			}.Build())
+			Expect(err).ToNot(HaveOccurred())
+			return response.GetObject()
+		}
+
+		It("Creates and gets a volume", func() {
+			created := createVolume()
+
+			Expect(created.GetId()).ToNot(BeEmpty())
+			Expect(created.GetSpec().GetStorageTier()).To(Equal("gold"))
+			Expect(created.GetSpec().GetSizeGib()).To(Equal(int64(100)))
+			Expect(created.GetSpec().GetAccessMode()).To(Equal(
+				privatev1.VolumeAccessMode_VOLUME_ACCESS_MODE_READ_WRITE_ONCE))
+			Expect(created.GetStatus().GetState()).To(Equal(
+				privatev1.VolumeState_VOLUME_STATE_CREATING))
+
+			getResponse, err := server.Get(ctx, privatev1.VolumesGetRequest_builder{
+				Id: created.GetId(),
+			}.Build())
+			Expect(err).ToNot(HaveOccurred())
+			obj := getResponse.GetObject()
+			Expect(obj.GetId()).To(Equal(created.GetId()))
+			Expect(obj.GetSpec().GetStorageTier()).To(Equal("gold"))
+		})
+
+		It("Creates a standalone volume without pvc_ref", func() {
+			created := createStandaloneVolume()
+
+			Expect(created.GetId()).ToNot(BeEmpty())
+			Expect(created.GetSpec().GetStorageTier()).To(Equal("gold"))
+			Expect(created.GetSpec().GetSizeGib()).To(Equal(int64(50)))
+			Expect(created.GetSpec().GetPvcRef()).To(BeNil())
+			Expect(created.GetStatus().GetState()).To(Equal(
+				privatev1.VolumeState_VOLUME_STATE_CREATING))
+		})
+
+		It("Creates a volume with pvc_ref", func() {
+			response, err := server.Create(ctx, privatev1.VolumesCreateRequest_builder{
+				Object: privatev1.Volume_builder{
+					Metadata: privatev1.Metadata_builder{
+						Name: "pvc-volume",
+					}.Build(),
+					Spec: privatev1.VolumeSpec_builder{
+						StorageTier: "gold",
+						SizeGib:     100,
+						AccessMode:  privatev1.VolumeAccessMode_VOLUME_ACCESS_MODE_READ_WRITE_ONCE,
+						PvcRef: privatev1.PVCReference_builder{
+							Name:      "my-pvc",
+							Namespace: "default",
+							Cluster:   "cluster-1",
+						}.Build(),
+					}.Build(),
+				}.Build(),
+			}.Build())
+			Expect(err).ToNot(HaveOccurred())
+			obj := response.GetObject()
+			Expect(obj.GetSpec().GetPvcRef().GetName()).To(Equal("my-pvc"))
+			Expect(obj.GetSpec().GetPvcRef().GetNamespace()).To(Equal("default"))
+			Expect(obj.GetSpec().GetPvcRef().GetCluster()).To(Equal("cluster-1"))
+		})
+
+		It("List volumes", func() {
+			const count = 5
+			for i := range count {
+				createVolumeWithName(fmt.Sprintf("volume-%d", i))
+			}
+
+			response, err := server.List(ctx, privatev1.VolumesListRequest_builder{}.Build())
+			Expect(err).ToNot(HaveOccurred())
+			Expect(response.GetItems()).To(HaveLen(count))
+		})
+
+		It("List volumes with limit", func() {
+			const count = 5
+			for i := range count {
+				createVolumeWithName(fmt.Sprintf("volume-%d", i))
+			}
+
+			response, err := server.List(ctx, privatev1.VolumesListRequest_builder{
+				Limit: new(int32(2)),
+			}.Build())
+			Expect(err).ToNot(HaveOccurred())
+			Expect(response.GetSize()).To(BeNumerically("==", 2))
+		})
+
+		It("List volumes with filter", func() {
+			const count = 3
+			var ids []string
+			for i := range count {
+				obj := createVolumeWithName(fmt.Sprintf("volume-%d", i))
+				ids = append(ids, obj.GetId())
+			}
+
+			for _, id := range ids {
+				response, err := server.List(ctx, privatev1.VolumesListRequest_builder{
+					Filter: new(fmt.Sprintf("this.id == '%s'", id)),
+				}.Build())
+				Expect(err).ToNot(HaveOccurred())
+				Expect(response.GetSize()).To(BeNumerically("==", 1))
+				Expect(response.GetItems()[0].GetId()).To(Equal(id))
+			}
+		})
+
+		It("List volumes with order", func() {
+			createVolumeWithName("aaa-volume")
+			createVolumeWithName("zzz-volume")
+
+			response, err := server.List(ctx, privatev1.VolumesListRequest_builder{
+				Order: new("metadata.name asc"),
+			}.Build())
+			Expect(err).ToNot(HaveOccurred())
+			Expect(response.GetSize()).To(BeNumerically("==", 2))
+			Expect(response.GetItems()[0].GetMetadata().GetName()).To(Equal("aaa-volume"))
+			Expect(response.GetItems()[1].GetMetadata().GetName()).To(Equal("zzz-volume"))
+		})
+
+		It("Update applies partial changes via field mask", func() {
+			created := createVolume()
+
+			updateResponse, err := server.Update(ctx, privatev1.VolumesUpdateRequest_builder{
+				Object: privatev1.Volume_builder{
+					Id: created.GetId(),
+					Status: privatev1.VolumeStatus_builder{
+						State:          privatev1.VolumeState_VOLUME_STATE_AVAILABLE,
+						VendorVolumeId: "vast-vol-123",
+						Backend:        "vast-1",
+						Protocol:       privatev1.StorageProtocol_STORAGE_PROTOCOL_NFS,
+					}.Build(),
+				}.Build(),
+				UpdateMask: &fieldmaskpb.FieldMask{Paths: []string{
+					"status.state",
+					"status.vendor_volume_id",
+					"status.backend",
+					"status.protocol",
+				}},
+			}.Build())
+			Expect(err).ToNot(HaveOccurred())
+			Expect(updateResponse.GetObject().GetStatus().GetState()).To(Equal(
+				privatev1.VolumeState_VOLUME_STATE_AVAILABLE))
+			Expect(updateResponse.GetObject().GetStatus().GetVendorVolumeId()).To(Equal("vast-vol-123"))
+			Expect(updateResponse.GetObject().GetStatus().GetBackend()).To(Equal("vast-1"))
+			Expect(updateResponse.GetObject().GetStatus().GetProtocol()).To(Equal(
+				privatev1.StorageProtocol_STORAGE_PROTOCOL_NFS))
+			Expect(updateResponse.GetObject().GetSpec().GetStorageTier()).To(Equal("gold"))
+		})
+
+		It("Delete removes the object", func() {
+			created := createVolume()
+
+			_, err := server.Delete(ctx, privatev1.VolumesDeleteRequest_builder{
+				Id: created.GetId(),
+			}.Build())
+			Expect(err).ToNot(HaveOccurred())
+
+			_, err = server.Get(ctx, privatev1.VolumesGetRequest_builder{
+				Id: created.GetId(),
+			}.Build())
+			Expect(err).To(HaveOccurred())
+			st, ok := status.FromError(err)
+			Expect(ok).To(BeTrue())
+			Expect(st.Code()).To(Equal(codes.NotFound))
+		})
+
+		It("Generates UUID for id ignoring caller-provided value", func() {
+			callerProvidedId := "my-custom-id"
+			response, err := server.Create(ctx, privatev1.VolumesCreateRequest_builder{
+				Object: privatev1.Volume_builder{
+					Id: callerProvidedId,
+					Metadata: privatev1.Metadata_builder{
+						Name: "test-volume",
+					}.Build(),
+					Spec: privatev1.VolumeSpec_builder{
+						StorageTier: "gold",
+						SizeGib:     100,
+						AccessMode:  privatev1.VolumeAccessMode_VOLUME_ACCESS_MODE_READ_WRITE_ONCE,
+					}.Build(),
+				}.Build(),
+			}.Build())
+			Expect(err).ToNot(HaveOccurred())
+			Expect(response.GetObject().GetId()).ToNot(Equal(callerProvidedId))
+			_, err = uuid.Parse(response.GetObject().GetId())
+			Expect(err).ToNot(HaveOccurred())
+		})
+
+		It("Create always sets state to CREATING regardless of caller-provided state", func() {
+			response, err := server.Create(ctx, privatev1.VolumesCreateRequest_builder{
+				Object: privatev1.Volume_builder{
+					Metadata: privatev1.Metadata_builder{
+						Name: "test-volume",
+					}.Build(),
+					Spec: privatev1.VolumeSpec_builder{
+						StorageTier: "gold",
+						SizeGib:     100,
+						AccessMode:  privatev1.VolumeAccessMode_VOLUME_ACCESS_MODE_READ_WRITE_ONCE,
+					}.Build(),
+					Status: privatev1.VolumeStatus_builder{
+						State: privatev1.VolumeState_VOLUME_STATE_AVAILABLE,
+					}.Build(),
+				}.Build(),
+			}.Build())
+			Expect(err).ToNot(HaveOccurred())
+			Expect(response.GetObject().GetStatus().GetState()).To(Equal(
+				privatev1.VolumeState_VOLUME_STATE_CREATING))
+		})
+
+		Describe("Validation", func() {
+			It("Create without metadata.name fails", func() {
+				_, err := server.Create(ctx, privatev1.VolumesCreateRequest_builder{
+					Object: privatev1.Volume_builder{
+						Spec: privatev1.VolumeSpec_builder{
+							StorageTier: "gold",
+							SizeGib:     100,
+							AccessMode:  privatev1.VolumeAccessMode_VOLUME_ACCESS_MODE_READ_WRITE_ONCE,
+						}.Build(),
+					}.Build(),
+				}.Build())
+				Expect(err).To(HaveOccurred())
+				st, ok := status.FromError(err)
+				Expect(ok).To(BeTrue())
+				Expect(st.Code()).To(Equal(codes.InvalidArgument))
+				Expect(st.Message()).To(ContainSubstring("metadata.name"))
+			})
+
+			It("Create without storage_tier fails", func() {
+				_, err := server.Create(ctx, privatev1.VolumesCreateRequest_builder{
+					Object: privatev1.Volume_builder{
+						Metadata: privatev1.Metadata_builder{
+							Name: "test-volume",
+						}.Build(),
+						Spec: privatev1.VolumeSpec_builder{
+							SizeGib:    100,
+							AccessMode: privatev1.VolumeAccessMode_VOLUME_ACCESS_MODE_READ_WRITE_ONCE,
+						}.Build(),
+					}.Build(),
+				}.Build())
+				Expect(err).To(HaveOccurred())
+				st, ok := status.FromError(err)
+				Expect(ok).To(BeTrue())
+				Expect(st.Code()).To(Equal(codes.InvalidArgument))
+				Expect(st.Message()).To(ContainSubstring("storage_tier"))
+			})
+
+			It("Create without size_gib fails", func() {
+				_, err := server.Create(ctx, privatev1.VolumesCreateRequest_builder{
+					Object: privatev1.Volume_builder{
+						Metadata: privatev1.Metadata_builder{
+							Name: "test-volume",
+						}.Build(),
+						Spec: privatev1.VolumeSpec_builder{
+							StorageTier: "gold",
+							AccessMode:  privatev1.VolumeAccessMode_VOLUME_ACCESS_MODE_READ_WRITE_ONCE,
+						}.Build(),
+					}.Build(),
+				}.Build())
+				Expect(err).To(HaveOccurred())
+				st, ok := status.FromError(err)
+				Expect(ok).To(BeTrue())
+				Expect(st.Code()).To(Equal(codes.InvalidArgument))
+				Expect(st.Message()).To(ContainSubstring("size_gib"))
+			})
+
+			It("Create without access_mode fails", func() {
+				_, err := server.Create(ctx, privatev1.VolumesCreateRequest_builder{
+					Object: privatev1.Volume_builder{
+						Metadata: privatev1.Metadata_builder{
+							Name: "test-volume",
+						}.Build(),
+						Spec: privatev1.VolumeSpec_builder{
+							StorageTier: "gold",
+							SizeGib:     100,
+						}.Build(),
+					}.Build(),
+				}.Build())
+				Expect(err).To(HaveOccurred())
+				st, ok := status.FromError(err)
+				Expect(ok).To(BeTrue())
+				Expect(st.Code()).To(Equal(codes.InvalidArgument))
+				Expect(st.Message()).To(ContainSubstring("access_mode"))
+			})
+
+			It("Create without spec fails", func() {
+				_, err := server.Create(ctx, privatev1.VolumesCreateRequest_builder{
+					Object: privatev1.Volume_builder{
+						Metadata: privatev1.Metadata_builder{
+							Name: "test-volume",
+						}.Build(),
+					}.Build(),
+				}.Build())
+				Expect(err).To(HaveOccurred())
+				st, ok := status.FromError(err)
+				Expect(ok).To(BeTrue())
+				Expect(st.Code()).To(Equal(codes.InvalidArgument))
+				Expect(st.Message()).To(ContainSubstring("spec"))
+			})
+		})
+
+		Describe("Name uniqueness", func() {
+			It("Create with duplicate active name fails", func() {
+				createVolumeWithName("unique-name")
+
+				_, err := server.Create(ctx, privatev1.VolumesCreateRequest_builder{
+					Object: privatev1.Volume_builder{
+						Metadata: privatev1.Metadata_builder{
+							Name: "unique-name",
+						}.Build(),
+						Spec: privatev1.VolumeSpec_builder{
+							StorageTier: "gold",
+							SizeGib:     50,
+							AccessMode:  privatev1.VolumeAccessMode_VOLUME_ACCESS_MODE_READ_WRITE_ONCE,
+						}.Build(),
+					}.Build(),
+				}.Build())
+				Expect(err).To(HaveOccurred())
+				st, ok := status.FromError(err)
+				Expect(ok).To(BeTrue())
+				Expect(st.Code()).To(Equal(codes.AlreadyExists))
+			})
+
+			It("Create after delete of same name succeeds", func() {
+				created := createVolumeWithName("reusable-name")
+
+				_, err := server.Delete(ctx, privatev1.VolumesDeleteRequest_builder{
+					Id: created.GetId(),
+				}.Build())
+				Expect(err).ToNot(HaveOccurred())
+
+				second := createVolumeWithName("reusable-name")
+				Expect(second.GetId()).ToNot(Equal(created.GetId()))
+				Expect(second.GetMetadata().GetName()).To(Equal("reusable-name"))
+			})
+		})
+
+		Describe("Signal", func() {
+			It("Signal succeeds for existing volume", func() {
+				created := createVolume()
+
+				_, err := server.Signal(ctx, privatev1.VolumesSignalRequest_builder{
+					Id: created.GetId(),
+				}.Build())
+				Expect(err).ToNot(HaveOccurred())
+			})
+
+			It("Signal fails for non-existent volume", func() {
+				_, err := server.Signal(ctx, privatev1.VolumesSignalRequest_builder{
+					Id: "non-existent-id",
+				}.Build())
+				Expect(err).To(HaveOccurred())
+				st, ok := status.FromError(err)
+				Expect(ok).To(BeTrue())
+				Expect(st.Code()).To(Equal(codes.NotFound))
+			})
+		})
+	})
+})
diff --git a/fulfillment-service/proto/private/osac/private/v1/event_type.proto b/fulfillment-service/proto/private/osac/private/v1/event_type.proto
index 5a0ba6190..c79687b69 100644
--- a/fulfillment-service/proto/private/osac/private/v1/event_type.proto
+++ b/fulfillment-service/proto/private/osac/private/v1/event_type.proto
@@ -46,6 +46,7 @@ import "osac/private/v1/storage_tier_type.proto";
 import "osac/private/v1/subnet_type.proto";
 import "osac/private/v1/user_type.proto";
 import "osac/private/v1/virtual_network_type.proto";
+import "osac/private/v1/volume_type.proto";
 
 // Represents events delivered by the server.
 message Event {
@@ -90,6 +91,7 @@ message Event {
     ClusterVersion cluster_version = 38;
     StorageTier storage_tier = 39;
     Secret secret = 40;
+    Volume volume = 41;
   }
 }
 
diff --git a/fulfillment-service/proto/private/osac/private/v1/storage_common_type.proto b/fulfillment-service/proto/private/osac/private/v1/storage_common_type.proto
new file mode 100644
index 000000000..11ce1bf83
--- /dev/null
+++ b/fulfillment-service/proto/private/osac/private/v1/storage_common_type.proto
@@ -0,0 +1,28 @@
+//
+// Copyright (c) 2026 Red Hat, Inc.
+//
+// Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with
+// the License. You may obtain a copy of the License at
+//
+//   http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on
+// an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the
+// specific language governing permissions and limitations under the License.
+//
+
+syntax = "proto3";
+
+package osac.private.v1;
+
+// Identifies the storage protocol used by storage backends and volumes.
+enum StorageProtocol {
+  // Protocol is unknown or has not been specified.
+  STORAGE_PROTOCOL_UNSPECIFIED = 0;
+
+  // NFS (Network File System) protocol for file-based storage access.
+  STORAGE_PROTOCOL_NFS = 1;
+
+  // Block storage protocol for volume-based storage access.
+  STORAGE_PROTOCOL_BLOCK = 2;
+}
diff --git a/fulfillment-service/proto/private/osac/private/v1/storage_tier_type.proto b/fulfillment-service/proto/private/osac/private/v1/storage_tier_type.proto
index 3b8359b4d..8b1b0ddd9 100644
--- a/fulfillment-service/proto/private/osac/private/v1/storage_tier_type.proto
+++ b/fulfillment-service/proto/private/osac/private/v1/storage_tier_type.proto
@@ -16,18 +16,7 @@ syntax = "proto3";
 package osac.private.v1;
 
 import "osac/private/v1/metadata_type.proto";
-
-// Identifies the storage protocol used by a backend association within a storage tier.
-enum StorageProtocol {
-  // Protocol is unknown or has not been specified.
-  STORAGE_PROTOCOL_UNSPECIFIED = 0;
-
-  // NFS (Network File System) protocol for file-based storage access.
-  STORAGE_PROTOCOL_NFS = 1;
-
-  // Block storage protocol for volume-based storage access.
-  STORAGE_PROTOCOL_BLOCK = 2;
-}
+import "osac/private/v1/storage_common_type.proto";
 
 // Lifecycle states for StorageTier resources.
 enum StorageTierState {
diff --git a/fulfillment-service/proto/private/osac/private/v1/volume_type.proto b/fulfillment-service/proto/private/osac/private/v1/volume_type.proto
new file mode 100644
index 000000000..371dba67f
--- /dev/null
+++ b/fulfillment-service/proto/private/osac/private/v1/volume_type.proto
@@ -0,0 +1,153 @@
+//
+// Copyright (c) 2026 Red Hat, Inc.
+//
+// Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with
+// the License. You may obtain a copy of the License at
+//
+//   http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on
+// an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the
+// specific language governing permissions and limitations under the License.
+//
+
+syntax = "proto3";
+
+package osac.private.v1;
+
+import "buf/validate/validate.proto";
+import "osac/private/v1/metadata_type.proto";
+import "osac/private/v1/storage_common_type.proto";
+
+// Access modes for Volume resources, matching Kubernetes PersistentVolume access modes.
+// https://kubernetes.io/docs/concepts/storage/persistent-volumes/#access-modes
+enum VolumeAccessMode {
+  // Access mode is unknown or has not been specified.
+  VOLUME_ACCESS_MODE_UNSPECIFIED = 0;
+
+  // The volume can be mounted as read-write by a single node.
+  VOLUME_ACCESS_MODE_READ_WRITE_ONCE = 1;
+
+  // The volume can be mounted as read-only by many nodes.
+  VOLUME_ACCESS_MODE_READ_ONLY_MANY = 2;
+
+  // The volume can be mounted as read-write by many nodes.
+  VOLUME_ACCESS_MODE_READ_WRITE_MANY = 3;
+
+  // The volume can be mounted as read-write by a single pod (requires CSI 1.5+).
+  VOLUME_ACCESS_MODE_READ_WRITE_ONCE_POD = 4;
+}
+
+// Lifecycle states for Volume resources.
+enum VolumeState {
+  // State is unknown or has not been determined yet.
+  VOLUME_STATE_UNSPECIFIED = 0;
+
+  // The volume is being provisioned on the storage backend.
+  VOLUME_STATE_CREATING = 1;
+
+  // The volume has been provisioned and is ready for use.
+  VOLUME_STATE_AVAILABLE = 2;
+
+  // The volume provisioning has permanently failed after max retries and requires admin intervention.
+  VOLUME_STATE_FAILED = 3;
+
+  // The volume is being deprovisioned from the storage backend.
+  VOLUME_STATE_DELETING = 4;
+
+  // The volume has been fully deprovisioned and the record is archived.
+  VOLUME_STATE_DELETED = 5;
+}
+
+// Identifies the PVC that triggered the volume creation.
+message PVCReference {
+  // Name of the PersistentVolumeClaim.
+  string name = 1;
+
+  // Namespace of the PersistentVolumeClaim.
+  string namespace = 2;
+
+  // Cluster where the PersistentVolumeClaim exists.
+  string cluster = 3;
+}
+
+// Identifies the PV created for a volume.
+message PVReference {
+  // Name of the PersistentVolume.
+  string name = 1;
+
+  // Cluster where the PersistentVolume exists.
+  string cluster = 2;
+}
+
+// Represents a block storage volume managed by the OSAC storage control plane.
+//
+// Volumes are tenant-scoped resources that represent storage provisioned on a backend storage array
+// through the OSAC CSI driver. The fulfillment-service tracks volume inventory in PostgreSQL and
+// reconciles Volume CRs on the hub cluster. The osac-operator Volume controller handles vendor
+// provisioning via the backend's CSI controller.
+//
+// Volumes are created through the private API, typically by the OSAC CSI driver in response to a
+// PVC on a tenant cluster. The spec captures the user's requested configuration (tier, size,
+// access mode), while the status tracks the system-resolved state (vendor volume ID, backend,
+// protocol).
+message Volume {
+  // Unique identifier of the volume.
+  string id = 1;
+
+  // Metadata of the volume.
+  Metadata metadata = 2;
+
+  // Desired configuration of the volume (immutable after creation).
+  VolumeSpec spec = 3;
+
+  // Current operational status of the volume.
+  VolumeStatus status = 4;
+}
+
+// Defines the desired configuration for a Volume. All fields are immutable after creation.
+message VolumeSpec {
+  // Name of the StorageTier that determines which backend and protocol serve this volume.
+  string storage_tier = 1 [(buf.validate.field).string.min_len = 1];
+
+  // Requested storage capacity in gibibytes (GiB).
+  int64 size_gib = 2 [(buf.validate.field).int64.gt = 0];
+
+  // Kubernetes access mode for the volume.
+  VolumeAccessMode access_mode = 3 [(buf.validate.field).enum.defined_only = true];
+
+  // Reference to the PVC that triggered this volume creation. Set by the CSI driver.
+  // Empty for API-driven volume creation.
+  PVCReference pvc_ref = 4;
+}
+
+// Represents the current operational state of a Volume.
+message VolumeStatus {
+  // Current lifecycle state of the volume.
+  VolumeState state = 1;
+
+  // Human-readable message providing additional details about the current state.
+  optional string message = 2;
+
+  // Opaque identifier assigned by the vendor storage array. Set by the osac-operator after vendor
+  // CSI CreateVolume succeeds.
+  string vendor_volume_id = 3;
+
+  // Name of the StorageBackend that serves this volume. Resolved during tier resolution at
+  // creation time. Visible only through the private API.
+  string backend = 4;
+
+  // Storage protocol used for this volume. Resolved during tier resolution at creation time.
+  // Visible only through the private API.
+  StorageProtocol protocol = 5;
+
+  // Identifier of the hub cluster where the Volume CR is created. Set by the fulfillment-service
+  // reconciler when selecting the hub. Used to look up the hub connection during delete.
+  string hub = 6;
+
+  // Operator-confirmed reference to the PVC on the tenant cluster.
+  PVCReference pvc_ref = 7;
+
+  // Reference to the PV created for this volume on the tenant cluster.
+  PVReference pv_ref = 8;
+}
diff --git a/fulfillment-service/proto/private/osac/private/v1/volumes_service.proto b/fulfillment-service/proto/private/osac/private/v1/volumes_service.proto
new file mode 100644
index 000000000..458249428
--- /dev/null
+++ b/fulfillment-service/proto/private/osac/private/v1/volumes_service.proto
@@ -0,0 +1,154 @@
+//
+// Copyright (c) 2026 Red Hat, Inc.
+//
+// Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with
+// the License. You may obtain a copy of the License at
+//
+//   http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on
+// an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the
+// specific language governing permissions and limitations under the License.
+//
+
+syntax = "proto3";
+
+package osac.private.v1;
+
+import "google/api/annotations.proto";
+import "google/protobuf/field_mask.proto";
+import "osac/private/v1/volume_type.proto";
+
+message VolumesListRequest {
+  // Index of the first result. If not specified the default value will be zero.
+  optional int32 offset = 1;
+
+  // Maximum number of results to be returned by the server. When not specified all the results will be returned. Note
+  // that there may not be enough results to return, and that the server may decide, for performance reasons, to return
+  // less results than requested.
+  optional int32 limit = 2;
+
+  // Filter criteria.
+  //
+  // The value of this parameter is a [CEL](https://cel.dev) expression used to select which objects to return. The
+  // built-in `this` variable refers to the object being tested and `now` refers to the current date and time. If the
+  // expression evaluates to `true` the object is included in the results. For example, to retrieve all volumes in the
+  // AVAILABLE state:
+  //
+  //     this.status.state == 2
+  //
+  // If this isn't provided, or if the value is empty, then all the volumes that the user has permission to see will be
+  // returned. Not all CEL constructs are currently supported for implementation reasons; see the filter documentation
+  // (docs/FILTER.md) for the full details.
+  optional string filter = 3;
+
+  // Order criteria.
+  //
+  // The syntax of this parameter is similar to the syntax of the _order by_ clause of a SQL statement, but using the
+  // names of the attributes of the volume instead of the names of the columns of a table. For example, in order to
+  // sort the volumes descending by size:
+  //
+  //     spec.size_gib desc
+  //
+  // If the parameter isn't provided, or if the value is empty, then the order of the results is undefined.
+  optional string order = 4;
+}
+
+message VolumesListResponse {
+  // Actual number of items returned. Note that this may be smaller than the value requested in the `limit` parameter
+  // of the request if there are not enough items, or if the system decides that returning that number of items isn't
+  // feasible or convenient for performance reasons.
+  int32 size = 1;
+
+  // Total number of items of the collection that match the search criteria, regardless of the number of results
+  // requested with the `limit` parameter.
+  int32 total = 2;
+
+  // List of results.
+  repeated Volume items = 3;
+}
+
+message VolumesGetRequest {
+  string id = 1;
+}
+
+message VolumesGetResponse {
+  Volume object = 1;
+}
+
+message VolumesCreateRequest {
+  Volume object = 1;
+}
+
+message VolumesCreateResponse {
+  Volume object = 1;
+}
+
+message VolumesUpdateRequest {
+  Volume object = 1;
+  google.protobuf.FieldMask update_mask = 2;
+
+  // Lock enables optimistic locking. When set to true, the server verifies that the current version of the object
+  // matches the value of the metadata.version field of the submitted object. If they differ the update will be
+  // rejected. This is useful to prevent lost updates when multiple clients are modifying the same object concurrently.
+  bool lock = 3;
+}
+
+message VolumesUpdateResponse {
+  Volume object = 1;
+}
+
+message VolumesDeleteRequest {
+  string id = 1;
+}
+
+message VolumesDeleteResponse {}
+
+message VolumesSignalRequest {
+  string id = 1;
+}
+
+message VolumesSignalResponse {}
+
+service Volumes {
+  // Retrieves the list of volumes.
+  rpc List(VolumesListRequest) returns (VolumesListResponse) {
+    option (google.api.http) = {get: "/api/private/v1/volumes"};
+  }
+
+  // Retrieves the details of one specific volume.
+  rpc Get(VolumesGetRequest) returns (VolumesGetResponse) {
+    option (google.api.http) = {
+      get: "/api/private/v1/volumes/{id}"
+      response_body: "object"
+    };
+  }
+
+  // Creates a new volume.
+  rpc Create(VolumesCreateRequest) returns (VolumesCreateResponse) {
+    option (google.api.http) = {
+      post: "/api/private/v1/volumes"
+      body: "object"
+      response_body: "object"
+    };
+  }
+
+  // Updates an existing volume.
+  rpc Update(VolumesUpdateRequest) returns (VolumesUpdateResponse) {
+    option (google.api.http) = {
+      patch: "/api/private/v1/volumes/{object.id}"
+      body: "object"
+      response_body: "object"
+    };
+  }
+
+  // Deletes a volume.
+  rpc Delete(VolumesDeleteRequest) returns (VolumesDeleteResponse) {
+    option (google.api.http) = {delete: "/api/private/v1/volumes/{id}"};
+  }
+
+  // Signals the volume for re-reconciliation. Called by the operator feedback controller after
+  // Volume CR status changes on the hub.
+  rpc Signal(VolumesSignalRequest) returns (VolumesSignalResponse) {
+  }
+}
diff --git a/osac-operator/api/v1alpha1/groupversion_info.go b/osac-operator/api/v1alpha1/groupversion_info.go
index 047f75c13..8b68c9319 100644
--- a/osac-operator/api/v1alpha1/groupversion_info.go
+++ b/osac-operator/api/v1alpha1/groupversion_info.go
@@ -58,6 +58,8 @@ func addKnownTypes(s *runtime.Scheme) error {
 		&ExternalIPAttachmentList{},
 		&NATGateway{},
 		&NATGatewayList{},
+		&Volume{},
+		&VolumeList{},
 	)
 	metav1.AddToGroupVersion(s, GroupVersion)
 	return nil
diff --git a/osac-operator/api/v1alpha1/volume_types.go b/osac-operator/api/v1alpha1/volume_types.go
new file mode 100644
index 000000000..de06b72aa
--- /dev/null
+++ b/osac-operator/api/v1alpha1/volume_types.go
@@ -0,0 +1,195 @@
+/*
+Copyright 2026.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+package v1alpha1
+
+import (
+	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
+)
+
+// VolumeSpec defines the desired state of Volume.
+// +kubebuilder:validation:XValidation:rule="!has(oldSelf.pvcRef) || has(self.pvcRef)",message="pvcRef cannot be removed once set"
+type VolumeSpec struct {
+	// StorageTier is the name of the StorageTier that determines which backend
+	// and protocol serve this volume.
+	// +kubebuilder:validation:Required
+	// +kubebuilder:validation:MinLength=1
+	// +kubebuilder:validation:XValidation:rule="self == oldSelf",message="storageTier is immutable"
+	StorageTier string `json:"storageTier"`
+
+	// SizeGiB is the requested storage capacity in gibibytes.
+	// +kubebuilder:validation:Required
+	// +kubebuilder:validation:Minimum=1
+	// +kubebuilder:validation:XValidation:rule="self == oldSelf",message="sizeGiB is immutable"
+	SizeGiB int64 `json:"sizeGiB"`
+
+	// AccessMode is the Kubernetes access mode for the volume.
+	// https://kubernetes.io/docs/concepts/storage/persistent-volumes/#access-modes
+	// +kubebuilder:validation:Required
+	// +kubebuilder:validation:Enum=ReadWriteOnce;ReadOnlyMany;ReadWriteMany;ReadWriteOncePod
+	// +kubebuilder:validation:XValidation:rule="self == oldSelf",message="accessMode is immutable"
+	AccessMode VolumeAccessMode `json:"accessMode"`
+
+	// PVCRef is the reference to the PVC that triggered this volume creation.
+	// Set by the CSI driver. Empty for API-driven volume creation.
+	// +kubebuilder:validation:Optional
+	// +kubebuilder:validation:XValidation:rule="self == oldSelf",message="pvcRef is immutable"
+	PVCRef *PVCReferenceType `json:"pvcRef,omitempty"`
+}
+
+// PVCReferenceType identifies the PVC that triggered volume creation.
+type PVCReferenceType struct {
+	// Name of the PersistentVolumeClaim.
+	// +kubebuilder:validation:Required
+	// +kubebuilder:validation:MinLength=1
+	Name string `json:"name"`
+
+	// Namespace of the PersistentVolumeClaim.
+	// +kubebuilder:validation:Required
+	// +kubebuilder:validation:MinLength=1
+	Namespace string `json:"namespace"`
+
+	// Cluster where the PersistentVolumeClaim exists.
+	// +kubebuilder:validation:Required
+	// +kubebuilder:validation:MinLength=1
+	Cluster string `json:"cluster"`
+}
+
+// PVReferenceType identifies the PV created for a volume.
+type PVReferenceType struct {
+	// Name of the PersistentVolume.
+	// +kubebuilder:validation:Required
+	// +kubebuilder:validation:MinLength=1
+	Name string `json:"name"`
+
+	// Cluster where the PersistentVolume exists.
+	// +kubebuilder:validation:Required
+	// +kubebuilder:validation:MinLength=1
+	Cluster string `json:"cluster"`
+}
+
+// VolumeAccessMode defines valid Kubernetes PersistentVolume access modes.
+// https://kubernetes.io/docs/concepts/storage/persistent-volumes/#access-modes
+// +kubebuilder:validation:Enum=ReadWriteOnce;ReadOnlyMany;ReadWriteMany;ReadWriteOncePod
+type VolumeAccessMode string
+
+const (
+	VolumeAccessModeReadWriteOnce    VolumeAccessMode = "ReadWriteOnce"
+	VolumeAccessModeReadOnlyMany     VolumeAccessMode = "ReadOnlyMany"
+	VolumeAccessModeReadWriteMany    VolumeAccessMode = "ReadWriteMany"
+	VolumeAccessModeReadWriteOncePod VolumeAccessMode = "ReadWriteOncePod"
+)
+
+// VolumeProtocol defines valid storage protocols for volumes.
+// +kubebuilder:validation:Enum=Block;NFS
+type VolumeProtocol string
+
+const (
+	VolumeProtocolBlock VolumeProtocol = "Block"
+	VolumeProtocolNFS   VolumeProtocol = "NFS"
+)
+
+// VolumePhaseType is a valid value for .status.phase
+type VolumePhaseType string
+
+const (
+	VolumePhaseProgressing VolumePhaseType = "Progressing"
+	VolumePhaseReady       VolumePhaseType = "Ready"
+	VolumePhaseFailed      VolumePhaseType = "Failed"
+	VolumePhaseDeleting    VolumePhaseType = "Deleting"
+)
+
+// VolumeConditionType is a valid value for .status.conditions.type
+type VolumeConditionType string
+
+const (
+	// VolumeConditionVendorProvisioned indicates whether the volume has been
+	// provisioned on the vendor storage array.
+	VolumeConditionVendorProvisioned VolumeConditionType = "VendorProvisioned"
+)
+
+// VolumeStatus defines the observed state of Volume.
+type VolumeStatus struct {
+	// Phase provides a single-value overview of the state of the Volume.
+	// +kubebuilder:validation:Optional
+	// +kubebuilder:validation:Enum=Progressing;Ready;Failed;Deleting
+	Phase VolumePhaseType `json:"phase,omitempty"`
+
+	// Conditions holds an array of metav1.Condition that describe the state of the Volume.
+	// +kubebuilder:validation:Optional
+	// +listType=map
+	// +listMapKey=type
+	// +patchStrategy=merge
+	// +patchMergeKey=type
+	Conditions []metav1.Condition `json:"conditions,omitempty" patchStrategy:"merge" patchMergeKey:"type"`
+
+	// VendorVolumeID is the opaque identifier assigned by the vendor storage array.
+	// Set by the Volume controller after vendor CSI CreateVolume succeeds.
+	// +kubebuilder:validation:Optional
+	VendorVolumeID string `json:"vendorVolumeID,omitempty"`
+
+	// Backend is the name of the StorageBackend that serves this volume.
+	// Resolved during tier resolution at creation time.
+	// +kubebuilder:validation:Optional
+	Backend string `json:"backend,omitempty"`
+
+	// Protocol is the storage protocol used for this volume.
+	// Resolved during tier resolution at creation time.
+	// +kubebuilder:validation:Optional
+	// +kubebuilder:validation:Enum=Block;NFS
+	Protocol VolumeProtocol `json:"protocol,omitempty"`
+
+	// PVCRef is the operator-confirmed reference to the PVC on the tenant cluster.
+	// +kubebuilder:validation:Optional
+	PVCRef *PVCReferenceType `json:"pvcRef,omitempty"`
+
+	// PVRef is the reference to the PV created for this volume on the tenant cluster.
+	// +kubebuilder:validation:Optional
+	PVRef *PVReferenceType `json:"pvRef,omitempty"`
+}
+
+// +kubebuilder:object:root=true
+// +kubebuilder:subresource:status
+// +kubebuilder:resource:shortName=vol
+// +kubebuilder:printcolumn:name="Tier",type=string,JSONPath=`.spec.storageTier`
+// +kubebuilder:printcolumn:name="Size",type=integer,JSONPath=`.spec.sizeGiB`
+// +kubebuilder:printcolumn:name="Access",type=string,JSONPath=`.spec.accessMode`
+// +kubebuilder:printcolumn:name="Phase",type=string,JSONPath=`.status.phase`
+// +kubebuilder:printcolumn:name="Backend",type=string,JSONPath=`.status.backend`,priority=1
+// +kubebuilder:printcolumn:name="VendorID",type=string,JSONPath=`.status.vendorVolumeID`,priority=1
+
+// Volume is the Schema for the volumes API.
+type Volume struct {
+	metav1.TypeMeta `json:",inline"`
+
+	// +optional
+	metav1.ObjectMeta `json:"metadata,omitempty,omitzero"`
+
+	// +required
+	Spec VolumeSpec `json:"spec"`
+
+	// +optional
+	Status VolumeStatus `json:"status,omitempty,omitzero"`
+}
+
+// +kubebuilder:object:root=true
+
+// VolumeList contains a list of Volume.
+type VolumeList struct {
+	metav1.TypeMeta `json:",inline"`
+	metav1.ListMeta `json:"metadata,omitempty"`
+	Items           []Volume `json:"items"`
+}
diff --git a/osac-operator/api/v1alpha1/zz_generated.deepcopy.go b/osac-operator/api/v1alpha1/zz_generated.deepcopy.go
index 73d0a6b63..101281d8b 100644
--- a/osac-operator/api/v1alpha1/zz_generated.deepcopy.go
+++ b/osac-operator/api/v1alpha1/zz_generated.deepcopy.go
@@ -859,6 +859,36 @@ func (in *NodeRequest) DeepCopy() *NodeRequest {
 	return out
 }
 
+// DeepCopyInto is an autogenerated deepcopy function, copying the receiver, writing into out. in must be non-nil.
+func (in *PVCReferenceType) DeepCopyInto(out *PVCReferenceType) {
+	*out = *in
+}
+
+// DeepCopy is an autogenerated deepcopy function, copying the receiver, creating a new PVCReferenceType.
+func (in *PVCReferenceType) DeepCopy() *PVCReferenceType {
+	if in == nil {
+		return nil
+	}
+	out := new(PVCReferenceType)
+	in.DeepCopyInto(out)
+	return out
+}
+
+// DeepCopyInto is an autogenerated deepcopy function, copying the receiver, writing into out. in must be non-nil.
+func (in *PVReferenceType) DeepCopyInto(out *PVReferenceType) {
+	*out = *in
+}
+
+// DeepCopy is an autogenerated deepcopy function, copying the receiver, creating a new PVReferenceType.
+func (in *PVReferenceType) DeepCopy() *PVReferenceType {
+	if in == nil {
+		return nil
+	}
+	out := new(PVReferenceType)
+	in.DeepCopyInto(out)
+	return out
+}
+
 // DeepCopyInto is an autogenerated deepcopy function, copying the receiver, writing into out. in must be non-nil.
 func (in *ResolvedStorageClass) DeepCopyInto(out *ResolvedStorageClass) {
 	*out = *in
@@ -1398,3 +1428,114 @@ func (in *VirtualNetworkStatus) DeepCopy() *VirtualNetworkStatus {
 	in.DeepCopyInto(out)
 	return out
 }
+
+// DeepCopyInto is an autogenerated deepcopy function, copying the receiver, writing into out. in must be non-nil.
+func (in *Volume) DeepCopyInto(out *Volume) {
+	*out = *in
+	out.TypeMeta = in.TypeMeta
+	in.ObjectMeta.DeepCopyInto(&out.ObjectMeta)
+	in.Spec.DeepCopyInto(&out.Spec)
+	in.Status.DeepCopyInto(&out.Status)
+}
+
+// DeepCopy is an autogenerated deepcopy function, copying the receiver, creating a new Volume.
+func (in *Volume) DeepCopy() *Volume {
+	if in == nil {
+		return nil
+	}
+	out := new(Volume)
+	in.DeepCopyInto(out)
+	return out
+}
+
+// DeepCopyObject is an autogenerated deepcopy function, copying the receiver, creating a new runtime.Object.
+func (in *Volume) DeepCopyObject() runtime.Object {
+	if c := in.DeepCopy(); c != nil {
+		return c
+	}
+	return nil
+}
+
+// DeepCopyInto is an autogenerated deepcopy function, copying the receiver, writing into out. in must be non-nil.
+func (in *VolumeList) DeepCopyInto(out *VolumeList) {
+	*out = *in
+	out.TypeMeta = in.TypeMeta
+	in.ListMeta.DeepCopyInto(&out.ListMeta)
+	if in.Items != nil {
+		in, out := &in.Items, &out.Items
+		*out = make([]Volume, len(*in))
+		for i := range *in {
+			(*in)[i].DeepCopyInto(&(*out)[i])
+		}
+	}
+}
+
+// DeepCopy is an autogenerated deepcopy function, copying the receiver, creating a new VolumeList.
+func (in *VolumeList) DeepCopy() *VolumeList {
+	if in == nil {
+		return nil
+	}
+	out := new(VolumeList)
+	in.DeepCopyInto(out)
+	return out
+}
+
+// DeepCopyObject is an autogenerated deepcopy function, copying the receiver, creating a new runtime.Object.
+func (in *VolumeList) DeepCopyObject() runtime.Object {
+	if c := in.DeepCopy(); c != nil {
+		return c
+	}
+	return nil
+}
+
+// DeepCopyInto is an autogenerated deepcopy function, copying the receiver, writing into out. in must be non-nil.
+func (in *VolumeSpec) DeepCopyInto(out *VolumeSpec) {
+	*out = *in
+	if in.PVCRef != nil {
+		in, out := &in.PVCRef, &out.PVCRef
+		*out = new(PVCReferenceType)
+		**out = **in
+	}
+}
+
+// DeepCopy is an autogenerated deepcopy function, copying the receiver, creating a new VolumeSpec.
+func (in *VolumeSpec) DeepCopy() *VolumeSpec {
+	if in == nil {
+		return nil
+	}
+	out := new(VolumeSpec)
+	in.DeepCopyInto(out)
+	return out
+}
+
+// DeepCopyInto is an autogenerated deepcopy function, copying the receiver, writing into out. in must be non-nil.
+func (in *VolumeStatus) DeepCopyInto(out *VolumeStatus) {
+	*out = *in
+	if in.Conditions != nil {
+		in, out := &in.Conditions, &out.Conditions
+		*out = make([]v1.Condition, len(*in))
+		for i := range *in {
+			(*in)[i].DeepCopyInto(&(*out)[i])
+		}
+	}
+	if in.PVCRef != nil {
+		in, out := &in.PVCRef, &out.PVCRef
+		*out = new(PVCReferenceType)
+		**out = **in
+	}
+	if in.PVRef != nil {
+		in, out := &in.PVRef, &out.PVRef
+		*out = new(PVReferenceType)
+		**out = **in
+	}
+}
+
+// DeepCopy is an autogenerated deepcopy function, copying the receiver, creating a new VolumeStatus.
+func (in *VolumeStatus) DeepCopy() *VolumeStatus {
+	if in == nil {
+		return nil
+	}
+	out := new(VolumeStatus)
+	in.DeepCopyInto(out)
+	return out
+}
diff --git a/osac-operator/charts/operator-crds/templates/osac.openshift.io_volumes.yaml b/osac-operator/charts/operator-crds/templates/osac.openshift.io_volumes.yaml
new file mode 100644
index 000000000..4d6cff93f
--- /dev/null
+++ b/osac-operator/charts/operator-crds/templates/osac.openshift.io_volumes.yaml
@@ -0,0 +1,276 @@
+{{- if .Values.install }}
+---
+apiVersion: apiextensions.k8s.io/v1
+kind: CustomResourceDefinition
+metadata:
+  annotations:
+    "helm.sh/resource-policy": keep
+    controller-gen.kubebuilder.io/version: v0.20.0
+  name: volumes.osac.openshift.io
+spec:
+  group: osac.openshift.io
+  names:
+    kind: Volume
+    listKind: VolumeList
+    plural: volumes
+    shortNames:
+    - vol
+    singular: volume
+  scope: Namespaced
+  versions:
+  - additionalPrinterColumns:
+    - jsonPath: .spec.storageTier
+      name: Tier
+      type: string
+    - jsonPath: .spec.sizeGiB
+      name: Size
+      type: integer
+    - jsonPath: .spec.accessMode
+      name: Access
+      type: string
+    - jsonPath: .status.phase
+      name: Phase
+      type: string
+    - jsonPath: .status.backend
+      name: Backend
+      priority: 1
+      type: string
+    - jsonPath: .status.vendorVolumeID
+      name: VendorID
+      priority: 1
+      type: string
+    name: v1alpha1
+    schema:
+      openAPIV3Schema:
+        description: Volume is the Schema for the volumes API.
+        properties:
+          apiVersion:
+            description: |-
+              APIVersion defines the versioned schema of this representation of an object.
+              Servers should convert recognized schemas to the latest internal value, and
+              may reject unrecognized values.
+              More info: https://git.k8s.io/community/contributors/devel/sig-architecture/api-conventions.md#resources
+            type: string
+          kind:
+            description: |-
+              Kind is a string value representing the REST resource this object represents.
+              Servers may infer this from the endpoint the client submits requests to.
+              Cannot be updated.
+              In CamelCase.
+              More info: https://git.k8s.io/community/contributors/devel/sig-architecture/api-conventions.md#types-kinds
+            type: string
+          metadata:
+            type: object
+          spec:
+            description: VolumeSpec defines the desired state of Volume.
+            properties:
+              accessMode:
+                allOf:
+                - enum:
+                  - ReadWriteOnce
+                  - ReadOnlyMany
+                  - ReadWriteMany
+                  - ReadWriteOncePod
+                - enum:
+                  - ReadWriteOnce
+                  - ReadOnlyMany
+                  - ReadWriteMany
+                  - ReadWriteOncePod
+                description: |-
+                  AccessMode is the Kubernetes access mode for the volume.
+                  https://kubernetes.io/docs/concepts/storage/persistent-volumes/#access-modes
+                type: string
+                x-kubernetes-validations:
+                - message: accessMode is immutable
+                  rule: self == oldSelf
+              pvcRef:
+                description: |-
+                  PVCRef is the reference to the PVC that triggered this volume creation.
+                  Set by the CSI driver. Empty for API-driven volume creation.
+                properties:
+                  cluster:
+                    description: Cluster where the PersistentVolumeClaim exists.
+                    minLength: 1
+                    type: string
+                  name:
+                    description: Name of the PersistentVolumeClaim.
+                    minLength: 1
+                    type: string
+                  namespace:
+                    description: Namespace of the PersistentVolumeClaim.
+                    minLength: 1
+                    type: string
+                required:
+                - cluster
+                - name
+                - namespace
+                type: object
+                x-kubernetes-validations:
+                - message: pvcRef is immutable
+                  rule: self == oldSelf
+              sizeGiB:
+                description: SizeGiB is the requested storage capacity in gibibytes.
+                format: int64
+                minimum: 1
+                type: integer
+                x-kubernetes-validations:
+                - message: sizeGiB is immutable
+                  rule: self == oldSelf
+              storageTier:
+                description: |-
+                  StorageTier is the name of the StorageTier that determines which backend
+                  and protocol serve this volume.
+                minLength: 1
+                type: string
+                x-kubernetes-validations:
+                - message: storageTier is immutable
+                  rule: self == oldSelf
+            required:
+            - accessMode
+            - sizeGiB
+            - storageTier
+            type: object
+            x-kubernetes-validations:
+            - message: pvcRef cannot be removed once set
+              rule: '!has(oldSelf.pvcRef) || has(self.pvcRef)'
+          status:
+            description: VolumeStatus defines the observed state of Volume.
+            properties:
+              backend:
+                description: |-
+                  Backend is the name of the StorageBackend that serves this volume.
+                  Resolved during tier resolution at creation time.
+                type: string
+              conditions:
+                description: Conditions holds an array of metav1.Condition that describe
+                  the state of the Volume.
+                items:
+                  description: Condition contains details for one aspect of the current
+                    state of this API Resource.
+                  properties:
+                    lastTransitionTime:
+                      description: |-
+                        lastTransitionTime is the last time the condition transitioned from one status to another.
+                        This should be when the underlying condition changed.  If that is not known, then using the time when the API field changed is acceptable.
+                      format: date-time
+                      type: string
+                    message:
+                      description: |-
+                        message is a human readable message indicating details about the transition.
+                        This may be an empty string.
+                      maxLength: 32768
+                      type: string
+                    observedGeneration:
+                      description: |-
+                        observedGeneration represents the .metadata.generation that the condition was set based upon.
+                        For instance, if .metadata.generation is currently 12, but the .status.conditions[x].observedGeneration is 9, the condition is out of date
+                        with respect to the current state of the instance.
+                      format: int64
+                      minimum: 0
+                      type: integer
+                    reason:
+                      description: |-
+                        reason contains a programmatic identifier indicating the reason for the condition's last transition.
+                        Producers of specific condition types may define expected values and meanings for this field,
+                        and whether the values are considered a guaranteed API.
+                        The value should be a CamelCase string.
+                        This field may not be empty.
+                      maxLength: 1024
+                      minLength: 1
+                      pattern: ^[A-Za-z]([A-Za-z0-9_,:]*[A-Za-z0-9_])?$
+                      type: string
+                    status:
+                      description: status of the condition, one of True, False, Unknown.
+                      enum:
+                      - "True"
+                      - "False"
+                      - Unknown
+                      type: string
+                    type:
+                      description: type of condition in CamelCase or in foo.example.com/CamelCase.
+                      maxLength: 316
+                      pattern: ^([a-z0-9]([-a-z0-9]*[a-z0-9])?(\.[a-z0-9]([-a-z0-9]*[a-z0-9])?)*/)?(([A-Za-z0-9][-A-Za-z0-9_.]*)?[A-Za-z0-9])$
+                      type: string
+                  required:
+                  - lastTransitionTime
+                  - message
+                  - reason
+                  - status
+                  - type
+                  type: object
+                type: array
+                x-kubernetes-list-map-keys:
+                - type
+                x-kubernetes-list-type: map
+              phase:
+                description: Phase provides a single-value overview of the state of
+                  the Volume.
+                enum:
+                - Progressing
+                - Ready
+                - Failed
+                - Deleting
+                type: string
+              protocol:
+                allOf:
+                - enum:
+                  - Block
+                  - NFS
+                - enum:
+                  - Block
+                  - NFS
+                description: |-
+                  Protocol is the storage protocol used for this volume.
+                  Resolved during tier resolution at creation time.
+                type: string
+              pvRef:
+                description: PVRef is the reference to the PV created for this volume
+                  on the tenant cluster.
+                properties:
+                  cluster:
+                    description: Cluster where the PersistentVolume exists.
+                    minLength: 1
+                    type: string
+                  name:
+                    description: Name of the PersistentVolume.
+                    minLength: 1
+                    type: string
+                required:
+                - cluster
+                - name
+                type: object
+              pvcRef:
+                description: PVCRef is the operator-confirmed reference to the PVC
+                  on the tenant cluster.
+                properties:
+                  cluster:
+                    description: Cluster where the PersistentVolumeClaim exists.
+                    minLength: 1
+                    type: string
+                  name:
+                    description: Name of the PersistentVolumeClaim.
+                    minLength: 1
+                    type: string
+                  namespace:
+                    description: Namespace of the PersistentVolumeClaim.
+                    minLength: 1
+                    type: string
+                required:
+                - cluster
+                - name
+                - namespace
+                type: object
+              vendorVolumeID:
+                description: |-
+                  VendorVolumeID is the opaque identifier assigned by the vendor storage array.
+                  Set by the Volume controller after vendor CSI CreateVolume succeeds.
+                type: string
+            type: object
+        required:
+        - spec
+        type: object
+    served: true
+    storage: true
+    subresources:
+      status: {}
+{{- end }}
diff --git a/osac-operator/config/crd/bases/osac.openshift.io_volumes.yaml b/osac-operator/config/crd/bases/osac.openshift.io_volumes.yaml
new file mode 100644
index 000000000..4fda5935e
--- /dev/null
+++ b/osac-operator/config/crd/bases/osac.openshift.io_volumes.yaml
@@ -0,0 +1,273 @@
+---
+apiVersion: apiextensions.k8s.io/v1
+kind: CustomResourceDefinition
+metadata:
+  annotations:
+    controller-gen.kubebuilder.io/version: v0.20.0
+  name: volumes.osac.openshift.io
+spec:
+  group: osac.openshift.io
+  names:
+    kind: Volume
+    listKind: VolumeList
+    plural: volumes
+    shortNames:
+    - vol
+    singular: volume
+  scope: Namespaced
+  versions:
+  - additionalPrinterColumns:
+    - jsonPath: .spec.storageTier
+      name: Tier
+      type: string
+    - jsonPath: .spec.sizeGiB
+      name: Size
+      type: integer
+    - jsonPath: .spec.accessMode
+      name: Access
+      type: string
+    - jsonPath: .status.phase
+      name: Phase
+      type: string
+    - jsonPath: .status.backend
+      name: Backend
+      priority: 1
+      type: string
+    - jsonPath: .status.vendorVolumeID
+      name: VendorID
+      priority: 1
+      type: string
+    name: v1alpha1
+    schema:
+      openAPIV3Schema:
+        description: Volume is the Schema for the volumes API.
+        properties:
+          apiVersion:
+            description: |-
+              APIVersion defines the versioned schema of this representation of an object.
+              Servers should convert recognized schemas to the latest internal value, and
+              may reject unrecognized values.
+              More info: https://git.k8s.io/community/contributors/devel/sig-architecture/api-conventions.md#resources
+            type: string
+          kind:
+            description: |-
+              Kind is a string value representing the REST resource this object represents.
+              Servers may infer this from the endpoint the client submits requests to.
+              Cannot be updated.
+              In CamelCase.
+              More info: https://git.k8s.io/community/contributors/devel/sig-architecture/api-conventions.md#types-kinds
+            type: string
+          metadata:
+            type: object
+          spec:
+            description: VolumeSpec defines the desired state of Volume.
+            properties:
+              accessMode:
+                allOf:
+                - enum:
+                  - ReadWriteOnce
+                  - ReadOnlyMany
+                  - ReadWriteMany
+                  - ReadWriteOncePod
+                - enum:
+                  - ReadWriteOnce
+                  - ReadOnlyMany
+                  - ReadWriteMany
+                  - ReadWriteOncePod
+                description: |-
+                  AccessMode is the Kubernetes access mode for the volume.
+                  https://kubernetes.io/docs/concepts/storage/persistent-volumes/#access-modes
+                type: string
+                x-kubernetes-validations:
+                - message: accessMode is immutable
+                  rule: self == oldSelf
+              pvcRef:
+                description: |-
+                  PVCRef is the reference to the PVC that triggered this volume creation.
+                  Set by the CSI driver. Empty for API-driven volume creation.
+                properties:
+                  cluster:
+                    description: Cluster where the PersistentVolumeClaim exists.
+                    minLength: 1
+                    type: string
+                  name:
+                    description: Name of the PersistentVolumeClaim.
+                    minLength: 1
+                    type: string
+                  namespace:
+                    description: Namespace of the PersistentVolumeClaim.
+                    minLength: 1
+                    type: string
+                required:
+                - cluster
+                - name
+                - namespace
+                type: object
+                x-kubernetes-validations:
+                - message: pvcRef is immutable
+                  rule: self == oldSelf
+              sizeGiB:
+                description: SizeGiB is the requested storage capacity in gibibytes.
+                format: int64
+                minimum: 1
+                type: integer
+                x-kubernetes-validations:
+                - message: sizeGiB is immutable
+                  rule: self == oldSelf
+              storageTier:
+                description: |-
+                  StorageTier is the name of the StorageTier that determines which backend
+                  and protocol serve this volume.
+                minLength: 1
+                type: string
+                x-kubernetes-validations:
+                - message: storageTier is immutable
+                  rule: self == oldSelf
+            required:
+            - accessMode
+            - sizeGiB
+            - storageTier
+            type: object
+            x-kubernetes-validations:
+            - message: pvcRef cannot be removed once set
+              rule: '!has(oldSelf.pvcRef) || has(self.pvcRef)'
+          status:
+            description: VolumeStatus defines the observed state of Volume.
+            properties:
+              backend:
+                description: |-
+                  Backend is the name of the StorageBackend that serves this volume.
+                  Resolved during tier resolution at creation time.
+                type: string
+              conditions:
+                description: Conditions holds an array of metav1.Condition that describe
+                  the state of the Volume.
+                items:
+                  description: Condition contains details for one aspect of the current
+                    state of this API Resource.
+                  properties:
+                    lastTransitionTime:
+                      description: |-
+                        lastTransitionTime is the last time the condition transitioned from one status to another.
+                        This should be when the underlying condition changed.  If that is not known, then using the time when the API field changed is acceptable.
+                      format: date-time
+                      type: string
+                    message:
+                      description: |-
+                        message is a human readable message indicating details about the transition.
+                        This may be an empty string.
+                      maxLength: 32768
+                      type: string
+                    observedGeneration:
+                      description: |-
+                        observedGeneration represents the .metadata.generation that the condition was set based upon.
+                        For instance, if .metadata.generation is currently 12, but the .status.conditions[x].observedGeneration is 9, the condition is out of date
+                        with respect to the current state of the instance.
+                      format: int64
+                      minimum: 0
+                      type: integer
+                    reason:
+                      description: |-
+                        reason contains a programmatic identifier indicating the reason for the condition's last transition.
+                        Producers of specific condition types may define expected values and meanings for this field,
+                        and whether the values are considered a guaranteed API.
+                        The value should be a CamelCase string.
+                        This field may not be empty.
+                      maxLength: 1024
+                      minLength: 1
+                      pattern: ^[A-Za-z]([A-Za-z0-9_,:]*[A-Za-z0-9_])?$
+                      type: string
+                    status:
+                      description: status of the condition, one of True, False, Unknown.
+                      enum:
+                      - "True"
+                      - "False"
+                      - Unknown
+                      type: string
+                    type:
+                      description: type of condition in CamelCase or in foo.example.com/CamelCase.
+                      maxLength: 316
+                      pattern: ^([a-z0-9]([-a-z0-9]*[a-z0-9])?(\.[a-z0-9]([-a-z0-9]*[a-z0-9])?)*/)?(([A-Za-z0-9][-A-Za-z0-9_.]*)?[A-Za-z0-9])$
+                      type: string
+                  required:
+                  - lastTransitionTime
+                  - message
+                  - reason
+                  - status
+                  - type
+                  type: object
+                type: array
+                x-kubernetes-list-map-keys:
+                - type
+                x-kubernetes-list-type: map
+              phase:
+                description: Phase provides a single-value overview of the state of
+                  the Volume.
+                enum:
+                - Progressing
+                - Ready
+                - Failed
+                - Deleting
+                type: string
+              protocol:
+                allOf:
+                - enum:
+                  - Block
+                  - NFS
+                - enum:
+                  - Block
+                  - NFS
+                description: |-
+                  Protocol is the storage protocol used for this volume.
+                  Resolved during tier resolution at creation time.
+                type: string
+              pvRef:
+                description: PVRef is the reference to the PV created for this volume
+                  on the tenant cluster.
+                properties:
+                  cluster:
+                    description: Cluster where the PersistentVolume exists.
+                    minLength: 1
+                    type: string
+                  name:
+                    description: Name of the PersistentVolume.
+                    minLength: 1
+                    type: string
+                required:
+                - cluster
+                - name
+                type: object
+              pvcRef:
+                description: PVCRef is the operator-confirmed reference to the PVC
+                  on the tenant cluster.
+                properties:
+                  cluster:
+                    description: Cluster where the PersistentVolumeClaim exists.
+                    minLength: 1
+                    type: string
+                  name:
+                    description: Name of the PersistentVolumeClaim.
+                    minLength: 1
+                    type: string
+                  namespace:
+                    description: Namespace of the PersistentVolumeClaim.
+                    minLength: 1
+                    type: string
+                required:
+                - cluster
+                - name
+                - namespace
+                type: object
+              vendorVolumeID:
+                description: |-
+                  VendorVolumeID is the opaque identifier assigned by the vendor storage array.
+                  Set by the Volume controller after vendor CSI CreateVolume succeeds.
+                type: string
+            type: object
+        required:
+        - spec
+        type: object
+    served: true
+    storage: true
+    subresources:
+      status: {}