Administrator Guide

NOTE: To change the groupwide default values for both the snapshot space reserve and the warning percentage:
1. Click Group → Group Conguration.
2. Click the Defaults tab.
3. In the Snapshot space reserve section of the Volume Settings panel, modify the settings as needed.
Settings specied here apply to newly created volumes only, not to existing volumes.
Modify Snapshot Space Recovery Policy
To modify the snapshot space recovery policy:
1. Click Volumes.
2. Expand Volumes and then select the volume name.
3. In the Activities panel, below Snapshots click Modify snapshot policy.
The Modify snapshot policy dialog box opens.
4. In the dialog box, select either Set volume oine or Delete oldest snapshot.
If you select Delete oldest snapshot, you also have the option of selecting Borrow snapshot space as needed.
5. Click OK.
NOTE: To change the groupwide default values for the snapshot space recovery policy:
1. Click Group → Group Conguration.
2. Click the Defaults tab.
3. In the Snapshot space recovery section of the Volume Settings panel, modify the settings as needed.
Settings specied here apply to newly created volumes only, not to existing volumes.
Create a Snapshot
You can create a snapshot of a single volume at the current time. Snapshot creation occurs immediately, with no impact on volume
availability or performance.
1. Click Volumes.
2. Expand Volumes and then select the volume name.
3. In the Activities panel, click Create snapshot. The Create Snapshot dialog box opens.
4. (Optional) Type a description for the snapshot, up to 127 characters. Fewer characters are accepted for this eld if you type the
value as a Unicode character string, which takes up a variable number of bytes, depending on the specic character.
5. With the Set snapshot online checkbox, select whether to keep the snapshot oine (default) or set the snapshot online.
6. With the Make snapshot read-write checkbox, select whether to make the snapshot permission read-write (the default) or
read-only.
7. Click OK.
The snapshot appears in the far-left panel, under the volume name.
The default snapshot name is the volume name followed by the date and time when you created the snapshot (for example,
dbasevolume-2014-03-25-15:31:14.7668). Snapshots appear under a volume in the far-left panel listed by timestamp.
When you select a snapshot timestamp, its full name (volume and timestamp) appears in the GUI main window and in the Snapshot
iSCSI Settings panel. You can modify the snapshot name. The new name can contain up to 127 characters. (
Fewer characters are
accepted for this eld if you type the value as a Unicode character string, which takes up a variable number of bytes, depending on
the specic character.)
For information about the number of snapshots that can be created, see the Dell EqualLogic PS Series Storage Arrays Release
Notes. When the maximum number of snapshots for a volume or group is reached, the system displays an error message and no
more snapshots can be created.
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