DR Drilling

To verify the reliability of the DR system, customers usually perform planned DR drills every year or half a year to switch some services in production centers to DR centers. The CDM solution provides the planned migration function for this type of planned switchover.

The difference between the planned migration and DR test lies in that the snapshot at the DR end is not used. Instead, the LUN at the DR end is switched to the readable and writable state and is mounted to the DR host for normal access. This is a planned action. Before performing this operation, the production center is in the normal state. Therefore, the production center starts data synchronization and waits for completion before the switchover to ensure zero data loss when services are provided at the DR end.

• Performing Planned Service Migration in a HyperMetro Data Center
  If services in the HyperMetro data center are interrupted due to anticipated risks (such as outage and routine maintenance), a specific recovery plan can be executed to implement planned migration. The entire migration process is automatic without manual intervention. The DR site automatically takes over services. After the migration, services can be protected by implementing reprotection on the recovery plan, thereby implementing reverse protection for services taken over by the DR center.
• Performing Planned Failback of Services in the Remote DR Center
  After services are switched from the production center to the DR center through planned migration, the services must be switched back to the production center based on a drill plan.