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Cloud Backup:Back up NAS files

Last Updated:Aug 28, 2026

After you complete the required preparations, you can use Cloud Backup to back up Network Attached Storage (NAS) files on an ECS instance. You can then restore these files if they are lost or corrupted.

Prerequisites

You have completed the preparations.

Create a backup plan

After you create an ECS File Backup client, follow these steps to create a backup plan:

  1. Log on to the Cloud Backup console.

  2. In the left-side navigation pane, choose Back Up > ECS File Backup.

  3. In the top navigation bar, select a region.

  4. On the ECS File Backup page, click Add ECS File Backup.

    Note

    If you are using the previous version of the console, which displays Try New Version in the upper-right corner, go to the ECS Instances tab, find the target instance, and click Back Up in the Actions column.

  5. In the Create Backup Plan panel, configure the following parameters and click OK.

    Important

    NAS does not support the Volume Shadow Copy Service (VSS).

    Parameter

    Description

    ECS to back up

    Select the ECS instance to back up.

    Note

    If you use the previous version of the console, this parameter is automatically populated with your selected ECS instance and requires no configuration.

    Backup Folder Rule

    The directories to include in the backup. Select All Folders or Specified Folders. For this use case, select Specified Folders and enter the shared directory of the NAS file system. Example: \\0a80****-ijy70.cn-hangzhou.nas.aliyuncs.com\myshare.

    The path supports Chinese characters, uppercase and lowercase letters, digits, and the following special characters: ,-_=/.:\.

    Backup File Type

    Select All Types or Specified Type.

    If you select All Types, all file types are backed up.

    If you select Specified Type, you must select the file types to back up in the Select File Type box.

    Backup Policy

    Select a backup policy from the drop-down list. Cloud Backup automatically backs up the data source according to the policy. A backup policy defines settings such as vault encryption, backup interval, retention period, cross-region replication, automatic archiving, and virus detection for backup points.

    If the default backup policies do not meet your requirements, click Create Backup Policy or Edit Policy to create a custom policy.

    Enable Bandwidth Throttling

    Bandwidth throttling helps you control backup traffic during peak business hours to avoid impacting your services.

    To enable bandwidth throttling, turn on the Enable Bandwidth Throttling switch, select a Time Range (Hour), enter the Max Bandwidth (MByte/s) (in MByte/s) for the specified time range, and then click Add.

    Once created, the backup plan appears on the Backup Jobs tab.

  6. Click Run Now to start the backup plan.

    You can then monitor the progress of the backup job on the Backup Jobs tab.

    Note

    The task list displays backup jobs from the last six months. To access older records, export them from the Reports page.

Next steps

Restore NAS files