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 DR from the DR center to the production center and switch services back to the production center.

Prerequisites

Application-based protection policies and recovery plans have been configured for FusionCompute VMs deployed on physical machines.
For protected groups that use asynchronous remote replication, the DR center has at least one copy of intact service data.
The fault recovery of the recovery plan is successfully executed in the original DR center.
Fault recovery and reprotection have been implemented for the recovery plan of the service system.

Procedure

Log in to the service system in the original production center and check the service startup status.
Test the recovery plan and clear the test data on UltraVR. 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 UltraVR, perform a planned migration.
This step aims to switch services back to the production center from the DR center. After the migration, check the data. For details, see 2 to 3 in Planned Migration of Services in the Production Center.
On UltraVR, perform reprotection again.
Copy data from the production center to the DR center to recover the protected group status.