Cloud Backup:Back up a CPFS file system

Usage notes

The backup and restoration rates for Cloud Backup are based on data from a lab environment and are for reference only. For more information, see File backup and restoration rates.

Create a backup plan

1. Log on to the Cloud Backup console.

2. In the left navigation pane, choose Backup > CPFS Backup.

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

4. On the CPFS Backup page, for the target data source, click Create Backup Plan in the Actions column.

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

   Parameter	Description
   Source Paths	Enter the path to the directory that you want to back up. You can specify only one directory, and wildcard characters are not supported. The path must be relative to the Data Source Path. / indicates the entire directory.
   Backup Rule	The backup rule includes the following options: Include All Files: If you select this option, all files in the selected source path are backed up. Include Files or Exclude Files: After you select an option, enter a file list in the Enter Paths box. Cloud Backup backs up the specified files in the selected source path based on the rule. The file list is a subpath of the source path. The matching rules for the subpath are as follows: If the subpath starts with a forward slash (/), the filter matches the full path under the source path. For example, if the source path is /ifs/dataset and the file list is /subdir/data, files and directories in the /ifs/dataset/subdir/data path are backed up (or not backed up). For example, if the source path is /ifs/dataset and the file list is /abc*, files or directories in the /ifs/dataset/abc path that have the prefix `abc` are backed up (or not backed up). If the subpath does not start with a forward slash (/), the filter matches the relative path under the source path. This means any subpath that matches the rule is hit. For example, if the source path is /ifs/dataset and the file list is abc*, files or directories under the /ifs/dataset path that have the prefix `abc` are backed up (or not backed up). For example, if the source path is /ifs/dataset and the file list is abc, all files or directories named `abc` under the /ifs/dataset path are backed up (or not backed up).
   Backup Policy	Select a backup policy from the drop-down list. Cloud Backup automatically backs up the data source based on the backup policy you set. A backup policy includes settings such as backup vault encryption, backup interval, retention period, cross-region replication policy, and automatic data archiving. This helps you manage your data source assets flexibly. If the default backup policy does not meet your needs, click Create Backup Policy or Edit Policy to manage backup policies. For more information about the parameters in a backup policy, see Policy center.
   Switch to full backup when incremental backup fails	If you enable this option, the system automatically runs a full backup when an incremental backup fails. An incremental backup may fail for the following reasons: The filter rules for including or excluding files are modified. The data from the last backup in the backup vault has expired.
   Backup Sub-task Slice Size	A backup client group lets you add multiple clients to run a backup job concurrently. Setting the sub-task slice size allocates at least the specified number of files to a client for backup.

Successful backup

• When the scheduled backup time arrives, Cloud Backup starts and runs the backup job.

  Note

  The backup progress percentage is a dynamic estimate that the system generates based on the current data volume and is for reference only. It may not reflect the exact completion percentage. During the backup process, the displayed total scanned size may be smaller than the actual total data size because the data scan is not yet complete. The completion of the backup job is determined by its final status.

  On the Backup Jobs tab, if the Status of a backup job is Completed, the backup is successful.

  View details about the backup job, such as Total Scan, Completed Backups, Written to Vault, and Backup Speed. For more information about these metrics, see the tooltips in the Cloud Backup console.

  Note

  For backup jobs completed on or after June 1, 2025, statistics for both data volume and file count are displayed for Total Scanned at Source, Backup Completed, and Data Written to Vault. For backup jobs completed before this date, only data volume statistics are shown for these metrics.

  

• On the Data Source List tab, click the icon next to the target data source. Then view the record of each backup and the generated backup points in the Backup History section. You can use these historical backup points to restore the CPFS file system.

  

Extend the retention period of a backup point

To retain historical data from CPFS backups for a longer period, you can extend the retention period of the backup points.

1. On the Data Source List tab, click the icon next to the target file system.

2. In the Backup History, click the historical backup point whose retention period you want to extend. Set a specific time or select Never Expire.

   

3. Click Save.

Cross-region backup

To prevent regional disasters from affecting business continuity, Cloud Backup lets you create cross-region mirror vaults for backup vaults whose Vault Type is General Backup or Tablestore Backup. For general backup vaults that store CPFS data, create a cross-region mirror vault to enable cross-region disaster recovery for your data. After the mirror vault is created, data in the source backup vault is automatically replicated to the cross-region mirror vault to ensure data consistency between the two regions. You can also use the mirror vault to perform cross-region data restoration as needed. For more information, see Cross-region backup. In addition, CPFS backups also support enterprise-level features such as Cross-account backup, Automatic data archiving, KMS encryption, and Backup lock.

Troubleshooting

If the Status of a backup plan or backup job is abnormal, use the following suggestions to resolve the issue.

• Follow the on-screen instructions to correct the configuration.

• The backup job Status is Failed with the message: The client does not exist. Check whether the client is uninstalled or whether the ECS instance is released.

  1. Verify that the configuration of the backup directory mounted on the CPFS file system is correct.

  2. This can happen if the backup client group has no backup clients or if the required tools are not installed. To resolve this, reconfigure the backup client. For more information, see Install a backup client.

     Note

     The default client installation path is provided below. For your operations, use the actual installation path.

     • Windows log path: Local Disk (C) > Program Files > Aliyun Hybrid Backup Service Client > logs

     • Linux log path: /opt/alibabacloud/hbrclient/logs

• The backup plan's Status is disabled.

  This means the backup plan is paused. When a plan is paused, Cloud Backup no longer runs backup jobs for it. You should enable the backup plan as soon as possible.

More operations

References

• Back up a General-purpose NAS file system.

• Back up an Extreme NAS file system.

• Cloud Backup provides resource plans for different backup scenarios. These plans offer significant discounts to help you save on costs. For more information, see Resource plan purchase guide.

• The Cloud Backup data synchronization feature supports synchronizing large numbers of NAS files from a source to a destination.

• What is Cloud Backup?