Restoring Data to RDS for SQL Server Instances from Backups

Scenarios

Constraints

• Constraints on restoring data to a new DB instance:
  • The time zone of the new DB instance must be the same as that of the original DB instance. Otherwise, data inconsistency may occur.
• Constraints on restoring data to an existing DB instance (other than the original instance):
  • Restoring to an existing DB instance will overwrite data on it and cause the existing DB instance to be unavailable during the restoration.
  • To restore backup data to an existing DB instance, the selected DB instance must be in the same VPC as the original DB instance and must have the same DB engine and the same or later version than the original DB instance.
  • Ensure that the storage space of the selected instance is no less than that of the original instance. Otherwise, data will not be restored.
  • The time zone of the selected DB instance must be the same as that of the original DB instance. Otherwise, data inconsistency may occur.
  • DB instances with the TDE function enabled cannot be restored from backups to existing DB instances.

Procedure

1. Log in to the management console.
2. Click in the upper left corner and select a region and a project.
3. Click in the upper left corner of the page and choose Database > Relational Database Service.
4. On the Backups page, locate the target backup and click Restore in the Operation column.

   Alternatively, click the target DB instance on the Instances page. In the navigation pane, choose Backups & Restorations. On the displayed page, locate the backup to be restored and click Restore in the Operation column.

5. In the displayed dialog box, specify required information and click OK.
   1. Select a restoration method.
      • Create New Instance

        The Create New Instance page is displayed.

        • The DB engine of the new instance is the same as that of the original instance.
        • Storage space of the new DB instance is the same as that of the original DB instance by default.
        • For other parameter settings, refer to Buying an RDS for SQL Server Instance.

      • Restore to Existing

        Select an existing DB instance and click Next.

   2. Select the databases to be restored. You can rename these databases as required. If you do not enter a new name, the original database name will be used.
      Note

      • The new database names must be different from each other and must be different from the original database names.
      • The new database names cannot contain the following fields (case-insensitive): rdsadmin, master, msdb, tempdb, model, and resource.
      • Each database name consists of 1 to 64 characters. Only letters, digits, hyphens (-), underscores (_), and periods (.) are allowed.

6. View the restoration result. The result depends on which restoration method was selected:
   • Create New Instance

     A new DB instance is created using the backup data. The status of the DB instance changes from Creating to Available.

     The new DB instance is independent of the original one.

   • Restore to Existing

     On the Instances page, the status of the instance changes from Restoring to Available.