Administrator Guide

6. Click Yes to continue. Otherwise, click No.
If you clicked Yes, the volume groups and their volumes are deleted and the volumes table is updated.
Rolling back a virtual volume
You can replace the data of a source volume or virtual snapshot with the data of a snapshot that was created from it.
CAUTION: When you perform a rollback, the data that existed on the volume is replaced by the data on the snapshot. All
data on the volume written since the snapshot was created is lost. As a precaution, create a snapshot of the volume
before starting a rollback.
Only one rollback is allowed on the same volume at one time. Additional rollbacks are queued until the current rollback is complete.
However, after the rollback is requested, the volume is available for use as if the rollback has already completed.
For volumes and snapshots, if the contents of the selected snapshot have changed since it was created, the modified contents will
overwrite those of the source volume or snapshot during the rollback. Since virtual snapshots are copies of a point in time, they cannot be
reverted. If you want a snapshot to provide the capability to “revert” the contents of the source volume or snapshot to when the
snapshot was created, create a snapshot for this purpose and archive it so you do not change the contents.
To see more information about a volume, hover the cursor over the volume in the table. See Viewing volumes for more information about
the Volume Information panel that appears.
Roll back a volume
Perform the following steps to roll back a volume:
1. Unmount the volume from hosts.
2. In the Volumes topic, select the volume to roll back.
3. Select Action > Rollback Volume. The Rollback Volume panel opens and lists snapshots of the volume.
4. Select the snapshot to roll back to.
5. Click OK.
A confirmation panel appears.
6. Click OK.
You can remount the volume after the rollback completes.
Deleting volumes and snapshots
You can delete volumes and snapshots. You can delete a volume that has no child snapshots. You cannot delete a volume that is part of a
replication set.
CAUTION: Deleting a volume or snapshot removes its mappings and schedules and deletes its data.
NOTE: To delete a volume with one or more snapshots, or a snapshot with child snapshots, you must delete the
snapshots or child snapshots first.
To see more information about a volume or snapshot, hover the cursor over the item in the volumes table.
You can view additional snapshot information by hovering the cursor over the snapshot in the Related Snapshots table. See Viewing
volumes for more information about the Volume Information and Snapshot Information panels that appear.
Delete volumes and snapshots
1. Verify that hosts are not accessing the volumes and snapshots that you want to delete.
2. In the Volumes topic, select 1 through 100 items (volumes, snapshots, or both) to delete.
3. Select Action > Delete Volumes. The Delete Volumes panel opens with a list of the items to be deleted.
4. Click Delete. The items are deleted and the volumes table is updated.
Working in the Volumes topic
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