diff --git a/chart/questions.yaml b/chart/questions.yaml
index d9ca0a4..4621d0c 100644
--- a/chart/questions.yaml
+++ b/chart/questions.yaml
@@ -661,6 +661,40 @@ Set the value to **0** to disable backup restore."
   group: "Longhorn Default Settings"
   type: int
   default: "30"
+- variable: defaultSettings.backupCompressionMethod
+  label: Backup Compression Method
+  description: "This setting allows users to specify backup compression method.
+  Available options are
+    - **none**: Disable the compression method. Suitable for multimedia data such as encoded images and videos.
+    - **lz4**: Fast compression method. Suitable for flat files.
+    - **gzip**: A bit of higher compression ratio but relatively slow."
+  group: "Longhorn Default Settings"
+  type: string
+  default: "lz4"
+- variable: defaultSettings.backupConcurrentLimit
+  label: Backup Concurrent Limit Per Backup
+  description: "This setting controls how many worker threads per backup concurrently."
+  group: "Longhorn Default Settings"
+  type: int
+  min: 1
+  default: 5
+- variable: defaultSettings.restoreConcurrentLimit
+  label: Restore Concurrent Limit Per Backup
+  description: "This setting controls how many worker threads per restore concurrently."
+  group: "Longhorn Default Settings"
+  type: int
+  min: 1
+  default: 5
+- variable: defaultSettings.spdk
+  label: Enable SPDK Data Engine (Preview Feature)
+  description: "This allows users to activate SPDK data engine. Currently, it is in the preview phase and should not be utilized in a production environment.
+	WARNING:
+	  - The cluster must have pre-existing Multus installed, and NetworkAttachmentDefinition IPs are reachable between nodes.
+	  - DO NOT CHANGE THIS SETTING WITH ATTACHED VOLUMES. Longhorn will try to block this setting update when there are attached volumes.
+	  - When applying the setting, Longhorn will restart all instance-manager pods."
+  group: "Longhorn SPDK Data Engine Settings"
+  type: boolean
+  default: false
 - variable: persistence.defaultClass
   default: "true"
   description: "Set as default StorageClass for Longhorn"
diff --git a/chart/templates/default-setting.yaml b/chart/templates/default-setting.yaml
index 1abe72d..75b81bd 100644
--- a/chart/templates/default-setting.yaml
+++ b/chart/templates/default-setting.yaml
@@ -75,4 +75,8 @@ data:
     {{ if not (kindIs "invalid" .Values.defaultSettings.removeSnapshotsDuringFilesystemTrim) }}remove-snapshots-during-filesystem-trim: {{ .Values.defaultSettings.removeSnapshotsDuringFilesystemTrim }}{{ end }}
     {{ if not (kindIs "invalid" .Values.defaultSettings.fastReplicaRebuildEnabled) }}fast-replica-rebuild-enabled: {{ .Values.defaultSettings.fastReplicaRebuildEnabled }}{{ end }}
     {{ if not (kindIs "invalid" .Values.defaultSettings.replicaFileSyncHttpClientTimeout) }}replica-file-sync-http-client-timeout: {{ .Values.defaultSettings.replicaFileSyncHttpClientTimeout }}{{ end }}
-    {{ if not (kindIs "invalid" .Values.defaultSettings.logLevel) }}log-level: {{ .Values.defaultSettings.logLevel }}{{ end }}
\ No newline at end of file
+    {{ if not (kindIs "invalid" .Values.defaultSettings.logLevel) }}log-level: {{ .Values.defaultSettings.logLevel }}{{ end }}
+    {{ if not (kindIs "invalid" .Values.defaultSettings.backupCompressionMethod) }}backup-compression-method: {{ .Values.defaultSettings.backupCompressionMethod }}{{ end }}
+    {{ if not (kindIs "invalid" .Values.defaultSettings.backupConcurrentLimit) }}backup-concurrent-limit: {{ .Values.defaultSettings.backupConcurrentLimit }}{{ end }}
+    {{ if not (kindIs "invalid" .Values.defaultSettings.restoreConcurrentLimit) }}restore-concurrent-limit: {{ .Values.defaultSettings.restoreConcurrentLimit }}{{ end }}
+    {{ if not (kindIs "invalid" .Values.defaultSettings.spdk) }}spdk: {{ .Values.defaultSettings.spdk }}{{ end }}