What steps should an administrator take to return both clusters to their original state after testing DR?

To return both clusters to their original state after testing disaster recovery (DR), the step of deactivating the Protection Domain on the remote site and migrating from the primary site is appropriate as it effectively ensures that the original configuration and data integrity are maintained.

When testing DR, changes are often made to the remote site to simulate failover and maintain operations. Deactivating the Protection Domain helps to halt any further replication or protection operations that were specifically meant for the failover scenario. This ensures that any changes or data states on the remote cluster are not propagated back to the primary site inadvertently.

Following this, migrating back to the primary site allows you to return to the original state of operations, ensuring that all critical workloads revert to their designated primary cluster. This is essential in a DR strategy to maintain data consistency and uphold the organization's operational requirements.

Other choices involve processes that don’t directly address the need to deactivate and revert configurations effectively. Promoting the Protection Domain or restoring snapshots could create complications as they may involve additional changes or could even lead to inconsistencies if the proper states of clusters are not maintained. Suspending replication on the primary site does not address the immediate need to revert the changes made during the testing phase effectively. Hence, the selected option offers a