Resetting A Snapshot; Deleting Modified Data - HP 2000fc Reference Manual

Resetting a Snapshot

You can reset a snapshot to replace its content with the current data state of the
associated master volume. The selected snapshot is replaced with a current snapshot
having the same characteristics, such as name and LUN. The snapshot data is stored
in the snap pool associated with the master volume. Before being reset, a snapshot
must be unmounted from hosts.
Caution – Before resetting a snapshot you must unmount it from data hosts to
avoid data corruption.
To reset a snapshot:
1. Unmount the snapshot from hosts.
2. Select Manage > Volume Management > Snapshot Services > Reset Snapshot.
For each virtual disk, the virtual disk panel shows a status icon; the name, RAID
level, size, number of disk drives, and number of volumes; and utility status, if any.
3. Select a virtual disk.
The selected virtual disk's volume names, sizes, and types are displayed, and the
amount of free space.
4. Select the snapshot to reset.
5. Click Reset Snapshot.
When processing is complete, a message indicates whether the operation succeeded.

Deleting Modified Data

If a snapshot has been made accessible as read-write, you have the option of
deleting only the modified (write) data that has been written to it. (See "Managing
Volume Mappings" on page 99 for information about setting access privileges.) The
amount of data that has been written to a snapshot is shown in the Unique Data field
on the Snapshot Overview page. (See the information provided for snapshots in
"Viewing Information About Snap Pools, Master Volumes, and Snapshots" on
page 118.) You must unmount the snapshot from hosts before deleting modified
data.
Chapter 3 Managing Storage 115