Backup

CFS

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      • Announcement on CFS Metric Adjustments
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    • Selection Guide
      • How to Choose Between CFS and PFS
      • How to Choose Between CFS, BOS and CDS
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    • Activate Service
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      • Create file system
      • Delete a file system
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    • Mount and Access
      • Add mount target
      • Mount and Unmount CFS on BCC
        • Mount and Unmount on Linux System
          • Mount and Unmount SMB Protocol CFS on Single BCC
          • Batch mounting and unmounting NFS CFS on multiple BCC
          • Mounting and unmounting NFS CFS on a single BCC
        • Mount and Unmount SMB Protocol CFS on Windows System
        • Mount CFS File System When Purchasing New BCC
      • Using CFS in CCE
    • Permission Group Management
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    • Data encryption
    • Management Tags
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  • Typical Practices
    • Set Different User Permissions for Different Directories
    • Using File Systems Across Regions Or Accounts
    • Use SFTP to Upload and Download CFS File System Data
    • Use Rsync to Sync From Old File System to CFS File System
    • Best Practices for Managing CFS with Terraform
    • Performance Testing Methods
      • Linux System Performance Testing Methods
      • Windows System Performance Testing Methods
  • API Reference
    • API Function Update Records
    • API Overview
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    • Service domain
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      • Create file system
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      • Query mount client
      • Drop file system
      • Update file system tags
    • mount target Related Interfaces
      • Create mount target
      • Query mount targets
      • Delete mount target
    • Permission Group-related APIs
      • Create Permission Group
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      • Delete permission group
      • Create permission group rules
      • Update permission group rules
      • Query permission group rules
      • Delete permission group rule
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    • SMB Protocol Issues
  • Service Level Agreement (SLA)
    • CFS Service Level Agreement (SLA)
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CFS

  • Updates and Announcements
    • Function Release Records
    • Product Announcement
      • Announcement on CFS Metric Adjustments
  • Product Description
    • Product Introduction
    • Basic concepts
    • Product features
    • Product specifications
    • Usage Limits and Recommendations
    • Selection Guide
      • How to Choose Between CFS and PFS
      • How to Choose Between CFS, BOS and CDS
    • Application scenarios
  • Product pricing
    • Pay-as-you-go
    • Storage package billing
    • Insufficient balance reminders and debt handling
    • Billing Cases
  • Quick Start
    • Getting Started Overview
    • Quick start (Linux)
    • Quick start (Windows)
  • Operation guide
    • Activate Service
    • Manage File System
      • Create file system
      • Delete a file system
      • View file system details
      • Set File System Capacity Upper Limit
    • Mount and Access
      • Add mount target
      • Mount and Unmount CFS on BCC
        • Mount and Unmount on Linux System
          • Mount and Unmount SMB Protocol CFS on Single BCC
          • Batch mounting and unmounting NFS CFS on multiple BCC
          • Mounting and unmounting NFS CFS on a single BCC
        • Mount and Unmount SMB Protocol CFS on Windows System
        • Mount CFS File System When Purchasing New BCC
      • Using CFS in CCE
    • Permission Group Management
    • Identity and access management
    • Data encryption
    • Management Tags
    • Backup
    • Monitor and Alarm
      • View monitoring
      • Alarm management
      • Metric definition
    • Cloud Audit
  • Typical Practices
    • Set Different User Permissions for Different Directories
    • Using File Systems Across Regions Or Accounts
    • Use SFTP to Upload and Download CFS File System Data
    • Use Rsync to Sync From Old File System to CFS File System
    • Best Practices for Managing CFS with Terraform
    • Performance Testing Methods
      • Linux System Performance Testing Methods
      • Windows System Performance Testing Methods
  • API Reference
    • API Function Update Records
    • API Overview
    • Interface Overview
    • General Description
    • Service domain
    • Error code
    • File System Related Interfaces
      • Create file system
      • Update file system
      • Query file system
      • Query mount client
      • Drop file system
      • Update file system tags
    • mount target Related Interfaces
      • Create mount target
      • Query mount targets
      • Delete mount target
    • Permission Group-related APIs
      • Create Permission Group
      • Update permission group
      • Query Permission Groups
      • Delete permission group
      • Create permission group rules
      • Update permission group rules
      • Query permission group rules
      • Delete permission group rule
    • Data type
  • Go-SDK
    • Overview
    • Initialization
    • File system
    • Mount target
    • Error handling
  • FAQs
    • Common Questions Overview
    • General Problems
    • Billing Problems
    • NFS protocol questions
    • SMB Protocol Issues
  • Service Level Agreement (SLA)
    • CFS Service Level Agreement (SLA)
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  • Backup
Table of contents on this page
  • Cost description
  • Backup
  • Manual backup
  • Automatic backup
  • Restore
  • FAQs

Backup

Updated at：2025-11-11

To protect critical service assets, the Cloud File System (CFS) supports backup and recovery functions. When backing up file system data, CFS does not perform file system snapshots but relies on an efficient file system scanning mechanism. On the CFS console, configure backup policies to generate multiple backup replicas (full backup for the first time, and incremental backup for subsequent backup) and restore files promptly in the case of data loss or corruption.

Cost description

The CFS backup feature is currently in its free trial period. Specific billing details will be uniformly released before the trial ends and charges are implemented.

Backup

CFS backup supports both manual and automatic backups. Manual backup requires user initiation and execution, while automatic backup operates without user intervention. Users can define backup schedules, rules, and parameters, and the system automatically performs backups based on set intervals or specific triggers.

Manual backup

  1. Sign in to the CFS console, click Manage in the operation column to access the basic information page.

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  1. Click on Backup in the left menu to navigate to the backup list page.

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  1. Click on Manual Backup, then enter the Backup Name and Remarks in the pop-up window.

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  1. After clicking OK, you can view the details of the backup task.

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Automatic backup

  1. Go to the backup page (the same as for manual backups) and click on Automatic Backup (Disabled).
  2. In the pop-up window, provide details such as Backup Time, Recurrence Date, and Retention Period.

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  1. Click OK, and automatic backup will be enabled.
  2. To change the backup policy or turn off automatic backups, click on Automatic Backup (Enabled) again to modify the settings.

Restore

Currently, CFS only allows full restoration to a new file system. The steps are as follows:

  1. On the backup list page, locate the completed backup task, and click Backup Restore in the operation column to restore the file system.

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  1. In the pop-up window, choose the Availability Zone and Storage Class to restore.

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  1. Click OK, wait for a moment, and the newly restored file system will appear.

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FAQs

1. Will CFS backup affect file system performance?

Answer: Backup data is processed through a bypass mechanism, so it does not impact the performance of the CFS file system.

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