Replication is a disk array based technology where the disk array automatically duplicates data from one LUN to another.
Data replication relationship is of two types:
Remote replication involves in moving of data on primary storage arrays over WAN links to secondary storage arrays on secondary sites. Remote replication protects data loss in case of primary site failure or a geographical disaster.
SME does not perform data replication. SME is designed to support other third-party data replication solutions.