diff --git a/apps/immich/cluster.yaml b/apps/immich/cluster.yaml
index d7117a5..6a12cd7 100644
--- a/apps/immich/cluster.yaml
+++ b/apps/immich/cluster.yaml
@@ -5,7 +5,7 @@ metadata:
   namespace: immich
 spec:
   imageName: ghcr.io/tensorchord/cloudnative-vectorchord:17-0.3.0
-  instances: 1
+  instances: 3
 
   postgresql:
     shared_preload_libraries:
@@ -29,4 +29,4 @@ spec:
 
   storage:
     size: 8Gi
-    storageClass: longhorn
+    storageClass: longhorn-pg
diff --git a/infrastructure/configs/longhorn/storageclass-longhorn-pg.yaml b/infrastructure/configs/longhorn/storageclass-longhorn-pg.yaml
new file mode 100644
index 0000000..822e79b
--- /dev/null
+++ b/infrastructure/configs/longhorn/storageclass-longhorn-pg.yaml
@@ -0,0 +1,13 @@
+kind: StorageClass
+apiVersion: storage.k8s.io/v1
+metadata:
+  name: longhorn-pg
+provisioner: driver.longhorn.io
+allowVolumeExpansion: true
+reclaimPolicy: Delete
+volumeBindingMode: Immediate
+parameters:
+  numberOfReplicas: "1"
+  staleReplicaTimeout: "30"
+  fromBackup: ""
+  dataLocality: "strict-local"