Veritas Volume Manager 4.1 Administrator's Guide (HP-UX 11i v3, February 2007)

Creating Instant Snapshots
282 VERITAS Volume Manager Administrator’s Guide
You have the following choices of what to do with an instant snapshot:
◆ Refresh the contents of the snapshot. This creates a new point-in-time image of the
original volume ready for another backup. If synchronization was already in progress
on the snapshot, this operation may result in large portions of the snapshot having to
be resynchronized. See “Refreshing an Instant Snapshot (vxsnap refresh)” on page 287
for details.
◆ Reattach some or all of the plexes of the snapshot volume with the original volume.
See “Reattaching an Instant Snapshot (vxsnap reattach)” on page 287 for details.
Note The reattach operation is not supported for space-optimized instant
snapshots.
◆ Restore the contents of the original volume from the snapshot volume. For full-sized
instant snapshots, you can choose whether none, a subset, or all of the plexes of the
snapshot volume are returned to the original volume as a result of the operation. A
space-optimized instant snapshot always remains intact at the end of the operation.
See “Restoring a Volume from an Instant Snapshot (vxsnap restore)” on page 288 for
details.
◆ Dissociate the snapshot volume entirely from the original volume. This may be useful
if you want to use the copy for other purposes such as testing or report generation. If
desired, you can delete the dissociated volume. See “Dissociating an Instant Snapshot
(vxsnap dis)” on page 289 for details.
Note For space-optimized instant snapshots, this operation is only useful if you then
want to delete the snapshot altogether.
◆ If the snapshot is part of a snapshot hierarchy, you can also choose to split this
hierarchy from its parent volumes. See “Splitting an Instant Snapshot Hierarchy
(vxsnap split)” on page 290 for details.
Note This operation is not supported for space-optimized instant snapshots.