In a disaster recovery situation, you might typically perform the tasks in the following order:
Steps
Transfer operations from the data center system to the backup system (failover).
Restore operations to the data center system when it becomes available (failback).
Prepare the secondary system for disaster recovery.
Manually transfer operations from the data center system to the backup system
Steps
Create a snapshot of the secondary volume, use a snapshot history snapshot, or delete the replication set.
Map the snapshot or the secondary volume, depending on the option that you choose in step 1, to hosts.
Restore operations to the data center system
Steps
If the old primary volume still exists on the data center system, delete it. The volume cannot be used as the target—a new “secondary” volume will be created and deleting it will free up available space.
Create a peer connection between the backup system and the data center system, if necessary.
Create a replication set using the volume or snapshot on the backup system as the primary volume and the data center system as the secondary system.
Replicate the volume from the backup system to the data center system.
Prepare the backup system for disaster recovery after the replication is complete
Steps
Delete the replication set.
Delete the volume on the backup system. The volume cannot be used as the target of a replication and deleting it will free up space.
Create a replication set using the volume on the data center system as the primary volume and the backup system as the secondary system.
Replicate the volume from the data center system to the backup system.
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