PolarDB:Cross-region backup

Before you begin

To prevent backup failures, do not perform the following operations while a backup is in progress:

• Scaling or configuration changes: These operations conflict with the backup process and cause the backup to fail.

• DDL statements: DDL operations can lock tables and cause the backup to fail.

Configure cross-region backup

1. Log on to the PolarDB-X console.

2. In the top navigation bar, select the region where the instance is deployed.

3. On the Instances page, click the PolarDB-X 2.0 tab.

4. Find the instance that you want to manage and click its ID.

5. In the left-side navigation pane, choose Restore Data > Backup and Restoration.

6. Click Backup Policy.

7. On the Cross-region Backup tab, configure the following parameters.

   Parameter	Description
   Cross-region Data Backup	Specifies whether to enable automatic cross-region data backup.
   Cross-region Log Backup	Specifies whether to enable automatic cross-region log backup.
   Destination Region of Cross-region Backup	The region in which the cross-region backup set is stored.
   Retention Period of Cross-region Data Backup	The number of days to retain cross-region data backups. The value must be greater than 0.
   Retention Period of Cross-region Log Backup	The number of days to retain cross-region log backups. The value must be greater than 0.

   Note

   • Cross-region data backup and cross-region log backup must be enabled or disabled at the same time. You cannot enable one without the other.

   • The retention period of cross-region data backups must match the retention period of cross-region log backups.

8. Click OK.

Post-enablement behavior

• After cross-region backup is enabled, backup replication starts after the next local backup in the same region completes. From that point on, each subsequent local backup triggers a cross-region backup replication. This applies to both data backups and log backups.

• Backups that exceed the specified retention period are automatically deleted.