Service Switchback in the DR Center After Fault Recovery

Services are migrated from the production center to the DR center due to a recoverable fault such as an unexpected power failure. After the production center recovers from the fault, you must synchronize data generated during the fault recovery period from the DR center to the production center and switch services back to the production center.

Prerequisites

The fault recovery of the recovery plan is successfully executed in the original DR center.
The datastore name cannot contain Chinese characters.
Rebuild the ADG environment and REDO disk pair to the backup disk.

Procedure

Log in to the service system in the original production center and check the service startup status.
Ensure that the applications in the production center have been stopped before uninstalling disks.
Perform reprotection.
Data needs to be copied from the DR center to the production center to complete the initial data synchronization.
1. On the menu bar, select Utilization > Data Restore.
2. Select the recovery plan and click More > Reprotection on the Operation list.
3. Carefully read the content of the Confirm dialog box that is displayed and click OK to confirm the information.
If Save user configuration data is selected, self-defined protection policies and recovery settings, such as self-defined recovery steps, will be retained. Ensure that the configuration data has no adverse impact on service running after reprotection.
Test the recovery plan and clear the test data on eReplication. During the test, select a host or host group in the production center if necessary.
Before the services are switched back, you need to perform a DR test to verify the data availability to ensure that services can be successfully switched back. After the test, you must clear the test data to avoid switchback failure caused by test data. For details, see DR Testing in the DR Center.
On eReplication, perform a planned migration.
This step aims to switch services back to the production center from the DR center. After migration, data must be checked and test data must be cleared. For details, see 2 to 4 in Planned Migration of Services in the Production Center.
On eReplication, perform reprotection again.
Copy data from the production center to the DR center to recover the protected group status.