diff --git a/.changes/unreleased/Changed-20250224-104818.yaml b/.changes/unreleased/Changed-20250224-104818.yaml
new file mode 100644
index 00000000..076ebfe4
--- /dev/null
+++ b/.changes/unreleased/Changed-20250224-104818.yaml
@@ -0,0 +1,3 @@
+kind: Changed
+body: 'set updateStrategy: OnDelete for Storage StatefulSet by default'
+time: 2025-02-24T10:48:18.815104+08:00
diff --git a/internal/resources/database_statefulset.go b/internal/resources/database_statefulset.go
index a27f977b..9c9e9ed3 100644
--- a/internal/resources/database_statefulset.go
+++ b/internal/resources/database_statefulset.go
@@ -62,7 +62,7 @@ func (b *DatabaseStatefulSetBuilder) Build(obj client.Object) error {
 
 	if value, ok := b.ObjectMeta.Annotations[api.AnnotationUpdateStrategyOnDelete]; ok && value == api.AnnotationValueTrue {
 		sts.Spec.UpdateStrategy = appsv1.StatefulSetUpdateStrategy{
-			Type: "OnDelete",
+			Type: appsv1.OnDeleteStatefulSetStrategyType,
 		}
 	}
 
diff --git a/internal/resources/storage_statefulset.go b/internal/resources/storage_statefulset.go
index 5fb87671..2da17c3b 100644
--- a/internal/resources/storage_statefulset.go
+++ b/internal/resources/storage_statefulset.go
@@ -72,18 +72,15 @@ func (b *StorageStatefulSetBuilder) Build(obj client.Object) error {
 				labels.StatefulsetComponent: b.Name,
 			},
 		},
+		UpdateStrategy: appsv1.StatefulSetUpdateStrategy{
+			Type: appsv1.OnDeleteStatefulSetStrategyType,
+		},
 		PodManagementPolicy:  appsv1.ParallelPodManagement,
 		RevisionHistoryLimit: ptr.Int32(10),
 		ServiceName:          fmt.Sprintf(InterconnectServiceNameFormat, b.Storage.Name),
 		Template:             b.buildPodTemplateSpec(),
 	}
 
-	if value, ok := b.ObjectMeta.Annotations[api.AnnotationUpdateStrategyOnDelete]; ok && value == api.AnnotationValueTrue {
-		sts.Spec.UpdateStrategy = appsv1.StatefulSetUpdateStrategy{
-			Type: "OnDelete",
-		}
-	}
-
 	pvcList := make([]corev1.PersistentVolumeClaim, 0, len(b.Spec.DataStore))
 	for i, pvcSpec := range b.Spec.DataStore {
 		pvcList = append(