Adaptec Snap Server 700i Series, Руководство пользователя

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Backing Up Your Data with Snapshots
64 Snap Server 700i Series User’s Guide
Backing Up Your Data with Snapshots
Note
To create snapshots on systems running Windows XP, Windows Vista, Linux,
or VMware, you must use the CLI (see page 177.) Snapshots created on these OSs
are fail-consistent only, as the VSS Provider is not supported by the OSs.
Adaptec Storage Manager’s
snapshot feature creates a frozen copy of a volume at a
point in time. A snapshot sets up a link between the source volume and the
underlying logical devices in your iSCSI Storage Appliance. When data on the
source volume changes, the differences are captured on the snapshot drive.
If an error occurs on the volume, you can roll back the volume to the point in time
when the snapshot was created. You can also use the snapshot feature for tape
backup, drive cloning, and multi-server rollout.
Adaptec Storage Manager has a snapshot wizard to help you create a snapshot and
snapshot sets (a group of snapshots taken at the same time). A snapshot can include
one volume or multiple volumes. You cannot create a snapshot of either a mirrored
volume (the mirror manager) nor its mirror (the mirror plex). You can’t work with
any individual snapshot in a snapshot set; only the complete snapshot set can be
mounted or deleted, for example.
You can choose to run a snapshot job immediately, or schedule it for another time.
Before You Begin
Ensure that the VSS Provider (see page 17) is installed on the system on which you
plan to take snapshots. Also ensure that Microsoft Hotfix 913648 or equivalent is
installed on the system. Refer to http://support.microsoft.com/kb/895092 .
Creating a Snapshot from an iSCSI Storage Host Volume
You can create a up to 256 separate snapshots on one iSCSI Storage Appliance. (You
can include multiple volumes in one snapshot.) You cannot create a snapshot of
either a mirrored volume (the mirror manager) nor its mirror (the mirror plex).
You can also schedule snapshots to be created on a recurring basis. For more
information, see
To create a snapshot:
1
In the Enterprise View, select the iSCSI Storage Host you want.
2
In the Volumes View, select any volume.
3
Click the Snapshots button (shown at right). Or, In the
Actions
menu, select
Create snapshot
.
The wizard opens.