What is SnapMirror and its primary purpose?

• A. SnapMirror replicates data asynchronously from a source to a destination for DR and failover readiness.
• B. SnapMirror provides synchronous replication for zero RPO in the same or connected network.
• C. SnapVault stores copies of snapshots on a secondary target for long-term retention and restoration.
• D. WAFL is the underlying file system in ONTAP.

Answer: (A)

SnapMirror is NetApp's asynchronous data replication to a remote system, primarily used to support disaster recovery and failover readiness. By sending updates from the source to the destination with a small delay, the primary site can keep serving users while a near-up-to-date copy sits at the DR site. This setup provides protection against site failures and enables a quick failover if needed. It does not offer zero recovery point objective, since replication is not real-time. For long-term retention and restoration of snapshot copies, another feature is used, while WAFL refers to the ONTAP file system, not the replication itself.