Backup Types

Full backups

Database-level backups

Incremental backups

All data in an instance is backed up.

Specific databases in an instance are backed up.

Only data changes within a certain period of time are backed up.

Yes

No

Yes

• You can specify how many days automated backups can be retained for. If you shorten the retention period, the new backup policy takes effect for existing backups.
• Manual backups will not be deleted until you delete them manually.

Database-level backups are the backups you create for specific databases. They are retained until you delete them manually.

Incremental backups will be deleted along with automated full backups.

• A full backup is to back up all data of your DB instance in the current point of time.
• You can use a full backup to restore the complete data generated when the backup was created.
• Full backups can be created automatically or manually.

• Database-level backups are triggered manually.
• By default, a maximum of 50 databases can be backed up at a time.
• If a database fails or its data is damaged, you can restore it from a database-level backup to ensure data reliability.

• The system automatically backs up data changes made after the most recent automated or incremental backup every 5 minutes.
• Incremental backups can only be created automatically.
• Restoring data from incremental backups relies on the most recent full backup, as shown in Figure 1, so the most recent full backup that exceeds the retention period will not be deleted to ensure successful restoration.
  Figure 1 Incremental data restoration
  

Click the target instance name. On the Backups & Restorations page, click the Full Backups tab and check the backup size.

Click the target instance name. On the Backups & Restorations page, click the Database Backups tab and check the backup size.

Click the target instance name. On the Backups & Restorations page, click the Incremental Backups tab and check the backup size.

Automated backups

Manual backups

• You can set an automated backup policy on the console, and the system will back up your instance data based on the time window and backup cycle you set in the backup policy and will store the backups for the retention period you specified.
• Automated backups cannot be manually deleted. To delete them, you can adjust the retention period specified in your automated backup policy. Retained backups (including full and incremental backups) will be automatically deleted at the end of the retention period.

• Manual backups are user-initiated full backups of your DB instance. They are retained until you delete them manually.
• Regularly backing up your DB instance is recommended, so if your DB instance fails or data is corrupted, you can restore it using backups.

Yes

Yes

Automated backups are retained for the number of days you specified.

The retention period ranges from 1 to 3,660 days.

Manual backups are always retained until you delete them manually.

See Configuring a Same-Region Backup Policy.

See Creating a Manual Backup.

Same-region backups

Cross-region backups

Backups are stored in the same region as your DB instance.

Backups are stored in a different region from that of your DB instance.

Yes

No

Backups are retained for the number of days you specified.

The retention period ranges from 1 to 3,660 days.

Backups are retained for the number of days you specified.

The retention period ranges from 1 to 1,825 days.

Backups are stored in the same region as your DB instance. Same-region backup (automated backup) is enabled by default and cannot be disabled.

Backups are stored in a region different from the one where your DB instance is located. After you enable cross-region backup, the backups are automatically stored in the region you specify.

See Configuring a Same-Region Backup Policy.

See Configuring a Cross-Region Backup Policy.

Click Backups in the navigation pane. On the Same-Region Backups tab, check the backup size.

Click Backups in the navigation pane. On the Cross-Region Backups tab, click View Cross-Region Backup and check the backup size.