Veritas Storage Foundation 5.1 SP1 Advanced Features Administrator"s Guide (5900-1503, April 2011)

■ 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” on page 233.
■ Reattach some or all of the plexes of the snapshot volume with the original
volume.
See “Reattaching an instant snapshot” on page 233.
■ Restore the contents of the original volume from the snapshot volume.
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.
See “Restoring a volume from an instant snapshot” on page 235.
■ 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” on page 236.
■ 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” on page 237.
Creating and managing linked break-off snapshot volumes
Linked break-off snapshots are suitable for write-intensive volumes. Specifically,
they are used for off-host processing, because the snapshot could be in a different
disk group to start with and could avoid disk group split/join operations
For linked break-off snapshots, you must prepare a volume that is to be used as
the snapshot volume. This must be the same size as the volume for which the
snapshot is being created, and it must also have the same region size.
See “Creating a volume for use as a full-sized instant or linked break-off snapshot”
on page 217.
The attributes for a snapshot are specified as a tuple to the vxsnap make command.
This command accepts multiple tuples. One tuple is required for each snapshot
that is being created. Each element of a tuple is separated from the next by a slash
character (/). Tuples are separated by white space.
Administering volume snapshots
Creating instant snapshots
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