Which statement describes the role of SnapMirror in DR readiness?

• A. SnapMirror provides asynchronous replication to a remote site for DR preparedness.
• B. SnapMirror provides synchronous replication with zero RPO in all scenarios.
• C. SnapMirror is only used for local on-site protection.
• D. SnapMirror has no role in DR planning.

Answer: (A)

SnapMirror is used to mirror data from a primary site to a remote site to support disaster recovery readiness. It operates asynchronously, meaning writes are acknowledged at the source and then replicated to the destination later, so the recovery point objective (RPO) is not zero and depends on how often replication runs. This asynchronous setup provides a current offsite copy you can fail over to and test DR plans without impacting primary performance. For zero RPO, you’d use synchronous replication (such as in MetroCluster configurations), which isn’t what SnapMirror generally provides. SnapMirror isn’t limited to local protection and does play a central role in DR planning by keeping a remote copy available for failover and recovery.