The SnapVault secondary storage system will carry out SnapVault operations on its sources as usual. Then on a scheduled per-volume basis, the system will replicate the SnapVault data to its SnapMirror destination partner or tape backup unit.
Under this configuration, SnapVault does not delete any Snapshot version on the primary storage systems until that version has been successfully replicated from the SnapVault secondary storage unit to its SnapMirror destination. This guarantees that a Snapshot version will always be retrievable even if the SnapVault secondary storage system is disabled.