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| Using the snapshot procedure | ||
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In summary, the snapshot procedure consists of a few steps.
These include the following:
Attaching a snapshot mirror to a volume, using Prepare.
Detaching the snapshot mirror and creating the snapshot volume that is associated with the snapshot mirror.
Either reattaching the snapshot to the volume after you are done using it, or permanently disconnecting it from the volume. Snap Back reattaches the snapshot mirror; Snap Clear permanently disconnects the snapshot mirror from the volume, removing the association between the snapshot volume and the original volume.
The Prepare procedure takes considerable time because it involves creating a mirror, but it has to be done only the first time you perform the snap commands sequence. After that, you use the commands Snap Shot to break off the mirror for backup (or other purposes) and then Snap Back to reattach the snapshot mirror to the original volume. Both of those are very quick procedures (typically less than a minute for each one).
Snap Abort aborts the snapshot operation after the Prepare or Snap Back command is issued.