A healthcare provider must prove each quarter that its replicated application tier can start in the secondary region. The drill must leave production replication running and must not change the public name the clinics use to reach the application. Which option satisfies both requirements?
Show answer and explanation
Answer: D
A test failover in Azure Site Recovery starts copies of the replicated machines in a network you choose, typically an isolated one, so the drill does not disturb production replication or DNS. After validation you clean up the test resources. Planned failover moves the workload itself to the secondary region, which changes where production runs. Unplanned failover is meant for real outages and carries the same production impact. Reprotection re-establishes replication after a failover; it is a follow-up step, not a validation exercise.
Why the other options are wrong
- A. Planned failover moves production workloads to the secondary region and reverses replication direction, so it is not a non-disruptive rehearsal.
- B. Unplanned failover is an emergency action that brings up the secondary copies as live systems, which changes production and is not a drill.
- C. Reprotection restarts replication from the secondary back to the primary after a failover. It does not validate that the application starts in the secondary region.