Adaptec 5325302053 - Snap Server 720i NAS, User Manual

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Creating Volume Snapshots
Volume snapshots are snapshots of a file or directory on a specific volume, taken at
any time.
Note
Volume snapshots are supported only in Windows 2003.
To create volume snapshots,
1
Create a pool.
2
Create a logical drive using the provisioning agent.
Note
The pool should have capacity to hold all the snapshots you present in a
particular logical device.
3
Add file(s) to your logical device.
4
In ASM, click the provisioning agent in the Enterprise view. All the associated
volumes are display in the Physical and Logical Device view.
5
Right click the volume you want to snapshot and click Create Snapshot .
Note
The maximum number of volumes you can include in a snapshot set is 4 from
a single iSCSI storage appliance, and is 9 if you are using 3 iSCSI storage appliances.
6
Select the volume you want to snapshot. Enter a description and click Next .
7
Select the Managed system , Drive and Access Type and click Next .
8
Click Apply to create the snapshot or Schedule to snapshot the volume at a
specific time.
Ensuring Pool Capacity for Your Snapshots
Ensuring that there is adequate capacity in a pool to maintain your snapshots is
extremely important. Currently, when a pool reaches maximum capacity, all
snapshots contained within it go offline and are only retrievable manually.
Always carefully monitor the capacity of any pool that contains snapshots to avoid
the lengthy retrieval process and prevent snapshot loss.
Recovering from a Pool Capacity Warning
Adaptec Storage Manager generates a warning message when pool capacity reaches
5%. A second warning message is generated when pool capacity reaches 3%.
When you receive one of these messages, delete any unneeded volumes from the
pool or expand the size of the pool as soon as possible .