The best feature NetApp SnapMirror offers is block-level incremental replication, which is the foundation of everything. After the initial baseline transfer, only the changed blocks move across the wire, not entire files or volumes. In a busy storage environment, that is the difference between replication that fits in your backup window and replication that hammers your network all day. NetApp SnapMirror has positively impacted our organization by taking us from a theoretical DR capability, meaning we had a secondary site but had never fully tested a failover, to a validated, tested, documented DR process that we run quarterly, which is a fundamental change in our risk posture. Management can now say with confidence that if the primary site goes down, we recover within two hours with zero data loss on critical systems.
