Storage Replica

Storage Replica supports one-way replication between standalone servers, between clusters, and between storage devices within an [asymmetric (stretch) cluster][asymmetric cluster].

• Synchronous replication is possible when the replicated volumes can mirror data immediately, ensuring no data loss in case of failover
• Asynchronous replication is preferable when the replication partner is located over a WAN link

Storage Replica improves on DFS Replication, which is exclusively asynchronous and file-based, by using SMBv3 (port 445). Storage Replica requires two virtual disks, one for logs and one for data, which are the same size for each replication partner, and all the physical disks must use the same sector size.