Before any switchback, re-establish original System Manager primary and System Manager disaster recovery with replication from Data Center 1 (DC1) to Data Center 2 (DC2) regardless of the current state of the system post switchover. You must also verify the health of System Manager DC1 and DC2 replication state. You must have a healthy replication state between System Manager in DC1 and the System Manager in DC2.

At this point in the process, a partial or full switchover can occur. It can occur due to a failure or a planned maintenance window for testing the disaster recovery capabilities. Regardless of the current state of the two System Manager, reinstate their original deployed state before proceeding any further with the switchback. This means that you must have a primary System Manager in DC1 replicating to a standby System Manager in DC2.

If the switchover was caused by the failure or loss of the primary System Manager, you must first reinstate the failed System Manager and replication before attempting a switchback.

If the switchover was a planned full DR switchover, then the role of the primary is taken over by System Manager in DC2. Reverse with a System Manager switchback.

If a planned partial DR switchover occurred, then the roles of the System Manager is not changed from their original deployed state and further action is not required.