Planned Switchback of Services in the DR Center

Prerequisites

• Planned migration and reprotection have been successfully performed for the service system in the production center according to the recovery plan.
• The production host is working properly and the service system in the original production center is in standby state.

Procedure

1. Test the recovery plan and clear the test data on UltraVR.

   Before the services are switched back, you need to perform a DR test to verify the data availability to ensure service switchback success. 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.

2. Perform pre-migration configurations.
   • Without configuration, the VM IP address for planned migration is the same as that in the production center. You can configure one for planned migration on the Protected Object tab page of the recovery plan. For details, see Self-defining Startup Parameters for a Protected Object.
   • After adding or removing disks for a protected VM, refresh the information about the VM and manually enable DR for the protected group where the VM resides in time.

3. On UltraVR of the DR center, 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.

4. On UltraVR of the DR center, perform reprotection.

   After you complete the planned migration, the application systems are working in the original production center and protected groups become Invalid. To ensure that the production center can be recovered from the DR center when an event (planned or unplanned) happens on it after switchback, reprotection must be performed and the replication status from it to the DR center must be established again to synchronize data and ensure services are protected. For details, see Step 5 to Step 6 in Planned Migration of Services in the Production Center.

Result

After the reprotection is complete, the protected groups become normal.