Update 10.backup-restore-using-operator.md (#2158)

docs-2.0/nebula-operator/10.backup-restore-using-operator.md

@@ -142,7 +142,7 @@ When the data backup succeeds, a backup file is generated in the specified stora
 
 ### Notes
 
-- After the data recovery is successful, a new cluster will be created, and the old cluster will not be deleted. Users can decide whether to delete the old cluster themselves.
+- After the data recovery is successful, a new cluster will be created and the old cluster will not be deleted by default. You can decide whether to delete the old cluster themselves. The name of the new cluster is automatically generated by the Operator.
 - There will be a period of service unavailability during the data recovery process, so it is recommended to perform the operation during a low period of business activity.
 
 <!-- ### Recovery Process
@@ -209,7 +209,7 @@ spec:
   |Parameter|Default Value|Description|
   |:---|:---|:---|
   |`metadata.name`|-|The name of the resource object NebulaRestore.|
-  |`spec.br.clusterName`|-|The name of the backup cluster.|
+  |`spec.br.clusterName`|-|The name of the backup cluster. Backup based on this cluster, then create a new cluster with a name automatically generated. |
   |`spec.br.backupName`|-|The name of the backup file. Restore data based on this backup file.|
   |`spec.br.concurrency`|`5`|The number of concurrent downloads when restoring data. The default value is `5`.|
   |`spec.br.s3.region`|-| The geographical region where the S3 storage bucket is located.|