Re-establishing a DR Relationship

Scenarios

If Re-establish DR relationship is selected when you promote the DR instance to primary, you can re-establish the relationship after the original primary instance recovers. The DR relationship re-establishment operation should be performed at the DR instance side. After the operation, the original primary instance becomes the DR instance, and the original DR instance becomes primary.

Precautions

• Streaming DR is available only for instances whose DB engine version is V2.0-3.200 or later. For details about how to view the instance version, see Checking the DB Engine Version.

Procedure

1. Log in to the console and select the region where the new primary instance is located.
2. In the navigation pane on the left, choose Disaster Recovery. Locate the DR task and click Re-establish DR Relationship in the Operation column.
3. In the displayed dialog box, select the confirmation information, and click OK.

   If the DR relationship is re-established at the DR instance side, the original primary instance becomes the DR instance, and the original DR instance becomes primary.