Failback is a specific type of fault tolerance, occurs when a redundant storage server offers an exact replica of the real-time data, and if the primary server crashes, the users are automatically directed to the secondary server or backup server.

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Quizplus · Accepted Answer

The described process is known as "failover," not "failback." Failback refers to the process of restoring operations back to the primary server after it has been repaired or becomes operational again.

Failback Is a Specific Type of Fault Tolerance, Occurs When