Remote data replication for disaster recovery Synchronous Mirroring – where I/O completion is only returned when the remote site acknowledges the completion. Applicable for shorter distances (<200 km) Asynchronous Mirroring – where I/O completion is returned before the remote site has acknowledged the completion. Applicable for much greater distances (>200 km) Point-In-Time Snapshots to copy or clone data for diverse uses When combined with thin provisioning, enables space-efficient snapshots