Chapter 10: Protecting Your Data ●96
Creating a Snapshot
Note: Snapshot is an upgrade feature; if the Snapshot feature is lock ed,
see Adding Enhanced Features on page 21 for information o n
purchasing a feature key.
A snapshot is a frozen image of a logical drive at a particular point in
time. You can copy the data on one logical device to another logical
device by creating a snapshot. You may want to do this if you want to
back up your data to tape, clone a drive, or copy the data to multiple
servers.
There are two snapshot options:
●Snapshot Backup—Copies all data on a logical drive so that it can be
moved from one server to another. See page 97.
●Snapshot Nobackup—Creates a temporary copy of a logical drive
for tape backup and reference (uses less system resources than
Snapshot Backup).
Snapshot Limitations
●You can create a snapshot of only one controller at a time; you can’t
create a snapshot that includes multiple c ontrollers.
●The source logical drive (the logical drive that you’re copying) and
the target logical drive (the logical drive that y ou ’ r e co pying to) must
be on the same controller.
●The source and target logical drives may have the same or different
RAID levels.
●You can create up to four snapshots on each controller.
●The size of the target logical drive must be greater than or equal to
the size of the source logical drive.
●You can’t modify any information on a snapshot.