SnapMirror creates replicas of volumes. SnapMirror mirrors a Snapshot copy of data on a source volume to one or more destination volumes. SnapMirror automatically reflects incremental changes of the source volume on the destination volume.
SnapMirror can replicate a source volume to a destination volume on the same storage system or on a different storage system. The destination storage system can be in a different geographical location. This ability to duplicate data in different locations is a key component of a sound disaster recovery plan.
Data stored in a destination volume can be accessed through SnapDrive. Because the duplication is volume wide, Snapshot copies of other datasets on the source volume are also mirrored. And because SnapMirror updates the destination volumes to reflect incremental changes on the source volume, the result is an online, read-only destination volume that contains the same data as the source at the time of the most recent update.