Noun
failback (countable and uncountable, plural failbacks)
(computing) The restoration of a system in a state of failover back to its original state (before the failure occurred).
Assuming that your DR infrastructure is set up appropriately, then failover and failback will in fact be the most disruptive element to your DR execution. Source: Internet
These time consuming activities can be scheduled to occur, so you would also be able to schedule the failback process. Source: Internet
You can then trigger a failback once the interruption concludes and return services to their normal operation and location. Source: Internet