PPDM Unity 備份失敗、ABNA0026-無法完成SNAPSHOT_AND_SLICE作業、快照過多

Unity NAS 備份失敗，並出現下列錯誤：

ABNA0026: Unable to complete the SNAPSHOT_AND_SLICE operation because the NAS Agent cannot create the snapshot for the share path unity_data01_smb.

Creation of the snapshot for the asset cannot be completed because an error occurred.

 To troubleshoot this issue: 
1) Check and address the vendor specific message for more details. 
2) Check the array to ensure that no errors occurred during snapshot creation. 
3) Check if the snapshot capability license is available and enabled. 
4) Manually clean up the snapshot if the snapshot capacity for the asset/file system has been exceeded. 
5) Make sure that backup user has all required privileges. 
6) Check if the filesystem has requisite available storage. 
7) Verify that the array can be reached over the proxy network. 
8) Check for the export path length. The characters that are allowed for path length should be within 255 characters.

以及詳細的錯誤訊息：

NAS vProxy Engine Protection_ENGINE_FQDN is unable to perform SnapshotAndSlice operation for nasShare unity_data01_smb. 

Error Details:
 TaskId: 0f105547-a457-4939-83d1-0b76a92693dc, JobId 0f105547-a457-4939-83d1-0b76a92693dc 
 NAS agent error code 'ABNA0026'. Snapshot creation failed for file system 'unity_data01_smb'. Reason: Rest response code 409 for url : https://UNITY_IP/api/types/snap/instances, error Code : 1903001780, error message : Unable to create the snapshot because the maximum number of snapshots already exists for the file system. (Error Code:0x716d80b4)

嘗試在 Unity 檔案系統上手動拍攝快照時，會顯示以下錯誤訊息：

Unable to create the snapshot because the maximum number of snapshots already exists for the file system. (Error Code: 0x716d80b4)

發生這種情況是因為相同檔案系統的快照過多。

在 Unity Unisphere 的「系統>軟體和授權>系統限制」中，有系統快照限制：  

這顯示了快照限制。

若要解決此問題，請減少檔案系統的快照數。

如果無法完成，建議您向 Dell Unity 支援 開立服務要求，以討論並瞭解出現許多快照的原因。