You create SnapVault relationships to back up and restore volumes. You can select the Snapshot copies that the SnapVault relationship uses to backup and restore volumes.
The SnapVault operation backs up a specified volume on the primary system to the associated volume on the SnapVault secondary system. If necessary, data is restored from the SnapVault secondary volume back to the associated primary volume or to a different volume.
The Snapshot policy assigned to the source volume specifies when Snapshot copies are performed. The SnapVault policy assigned to the SnapVault relationship specifies which of the source volume Snapshot copies are replicated to the SnapVault backup.
If the destination volume is a FlexClone volume, the volume retains two more Snapshot copies than the number you configure in the policy. This occurs because the volume retains the FlexClone Snapshot copy and an exported Snapshot copy. For example, if your policy specifies to retain three Snapshot copies, five Snapshot copies are retained (three specified Snapshot copies, one FlexClone Snapshot copy, and one exported Snapshot copy).
In SAN environments, LUN identifiers are preserved on the SnapVault secondary volume.
The secondary system uses slightly more disk space and directories than the source system.