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Cloud Backup:Back up NAS files

Last Updated:Jan 06, 2026

This topic describes how to use a Cloud Backup client to back up Server Message Block (SMB) NAS files from an on-premises data center.

Prerequisites

Ensure that you have completed the preparations.

Create a backup plan

  1. Log on to the Cloud Backup console.

  2. In the navigation pane on the left, choose Back Up > On-Premises File Backup.

  3. In the upper-left corner of the top navigation bar, select a region.

  4. Select the version of the backup client.

    • If you use the old backup client, click Old Version on the On-Premises File Backup page.

    • If you use the new backup client, click New Version on the On-Premises File Backup page.

  5. Find the client where the NAS file system is mounted, and in the Actions column, click Back Up.

  6. In the Create Backup Plan panel, configure the parameters as described in the following table and click OK.

    Parameter

    Description

    Backup Vault

    Select or create a backup vault to store the backup data.

    • Create a vault: Create a new backup vault. If you do not specify a name, a random name is assigned.

    • Select a vault: Select an existing backup vault from the drop-down list.

    Important

    You are charged for backup vaults after creation, even if they do not contain any backup data. For more information, see Billing methods and billable items.

    For maximum data redundancy, Cloud Backup defaults to zone-redundant storage (ZRS) in supported regions. Otherwise, it uses locally redundant storage (LRS). The storage type is selected automatically.

    Vault Name

    Enter a name for the backup vault.

    Vault Resource Group

    Specifies the resource group for the new backup vault. This parameter is required only if you choose to create a new backup vault.

    Use resource groups to manage resources that are owned by your Alibaba Cloud account. Resource groups help you simplify the resource and permission management for your Alibaba Cloud account. For more information, see Create a resource group.

    Vault Encryption Method

    This parameter is required only if you choose to create a new backup vault. It specifies the encryption method for the backup vault.

    • Cloud Backup-managed (default): Uses the default encryption method of Cloud Backup.

    • KMS: Uses a custom key from Key Management Service (KMS) to encrypt data. You must specify the KMS KeyId parameter.

    Important
    • After you use KMS to encrypt data, you cannot change the KMS key.

    • To use a KMS key to encrypt a backup vault, you must first create a KMS key ID in the KMS console. For more information, see Create a key.

    Plan Name

    Enter a name for the backup plan. This parameter is optional. If you do not specify a name, a random name is assigned.

    Backup Folder Rule

    Select All Folders or Specified Folders. In this scenario, select Specified Folders and enter the shared directory of the NAS instance to be backed up. For example, \\00a0e4******q63.cn-hangzhou.nas.aliyuncs.com\myshare.

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

    Exclude System Folders

    Enable this option to prevent system folders from being backed up.

    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.

    Start Time

    Select the time to start the backup. The time is accurate to the second.

    Backup Interval

    Select the frequency for incremental backups. The unit can be hours, days, or weeks.

    Retention Policy

    Select Limited or Permanent.

    If you select Limited, specify the types of files to be backed up in the Select File Type box.

    If you select Permanent, backup files are retained permanently.

    Retention Period

    This parameter is required only if you set Retention Policy to Limited. The unit can be days, weeks, months, or years.

    Use VSS

    This feature is supported only on Windows. Enable this option to use the Volume Shadow Copy Service (VSS) for backups. Multiple paths, UNC paths, wildcards, and file exclusion are not supported when VSS is used.

    Enable Bandwidth Throttling

    Bandwidth throttling can help you control backup traffic during peak hours to avoid affecting normal business operations.

    If you use bandwidth throttling, select a Time Range, enter the Maximum Bandwidth for backups within the specified time range, and then click Add.

    After the backup plan is created, view it on the Backup Plans tab.备份计划

  7. Click Run Now.

    View the progress of the backup job on the Backup Jobs tab.

    Note

    The job list displays only the backup jobs from the last six months. To view older jobs, export them from the Reports page.

    备份任务

Next step

Restore NAS files