PPDM Unity 备份失败、ABNA0026无法完成SNAPSHOT_AND_SLICE作、快照过多

Unity NAS 备份失败，并显示以下错误：

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.

对于详细的错误消息：

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)

尝试在 Unity 文件系统上创建手动快照时显示以下错误消息：

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

这是因为同一文件系统存在太多快照。

在 Unity Unisphere 中，在 System> Software和LicensesSystem >limits中，存在系统快照限制：

这显示了快照限制。

要解决此问题，请减少文件系统中的快照数量。

如果无法做到这一点，建议向 Dell Unity 支持 部门提出服务请求，以讨论和了解为什么存在许多快照。