Service Switchback in the DR Center After Fault Recovery

Prerequisites

The fault recovery has been successfully executed based on the recovery plan on the original DR center.

Procedure

1. Log in to the service system in the original production center and check the service startup conditions.

   Ensure that the applications in the production center have been stopped and prepare for disk uninstallation.

2. Perform reprotection.

   Copy data 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 for which you want to perform reprotection. In the Operation area, choose More > Reprotection.
   3. In the displayed Warning dialog box, read the content of the dialog box carefully and click OK.

3. 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 success rate of service failback. After the test is complete, clear the test data generated from the DR test to prevent the test data from adversely affecting the service failback rate. For details, see DR Test in the DR Center.

4. Perform planned migration on eReplication.

   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 1 to 2 in Planned Migration of Services in the Production Center.

5. On eReplication, perform reprotection again.

   Copy data from the production center to the DR center to recover the protected group status.