HP StorageWorks XP Remote Web Console Software - Manual (Page 28)

NOTE:
•
Before creating a pool, you must create the virtual volume management area in shared memory.
Virtual volume management areas are automatically created when you install additional shared
memory. For more information about installing additional shared memory, contact your HP account
support representative.
• If you already created pools or XP Snapshot pairs for testing purposes before you actually start
using XP Snapshot for production purposes, HP recommends initializing the V-VOL management
area beforehand. For more information, see
“
Initializing V-VOL management areas or pool management blocks ” on page 56.
You do not always need to delete XP Snapshot pairs after storing snapshot data in the pool. However,
since one P-VOL can be paired with up to 64 S-VOLs, you must delete the snapshot data or unnecessary
pairs. When deleting a XP Snapshot pair, the pair's snapshot data is also deleted from the pool.
If a failure occurs when restoring a XP Snapshot pair, the pair's snapshot data is written back to the
P-VOL. You might not be able to restore the pair if another pair is being restored.
For more information about the status of XP Snapshot pairs and operations on pairs, see
“
Status of Snapshot XP pairs ” on page 28.
Status of XP Snapshot pairs
When creating or splitting a XP Snapshot pair, the pair status changes. Figure 4 on page 29 shows
the transition of the XP Snapshot pair status.
Using XP Snapshot 28