HP StorageWorks XP Remote Web Console Software - Manual (Page 65)

You can store one snapshot data at a time by using the pairsplit command, but you cannot specify
the snapshot data ID. For details about the pairsplit command, see the HP StorageWorks XP RAID
Manager User’s Guide.
Note: XP Snapshot does not support Quick Split mode. If you specify Quick Split mode, snapshot data
will not be stored in the pool, even if the command ends normally.
Restoring XP Snapshot Pairs
Use the pairresync -restore command of the RAID Manager to restore XP Snapshot pairs. The XP Snapshot
pair must be in PSUS status when you restore the pair.
When the restoration completes, the pair status changes to PAIR. For details about the pairresync -restore
command, see the HP StorageWorks XP RAID Manager User’s Guide.
Warning : If a failure occurs during the restoration, the pair status changes to PSUE. To recover the PSUE
pair, you need to delete the snapshot data of the pair. When you recover the PSUE pair by deleting its
snapshot data, data in the P-VOL will not be guaranteed. Therefore, you need to overwrite the P-VOL with
the backup data or format the P-VOL.
Note: XP Snapshot does not support Quick Restore mode. If you specify Quick Restore mode, XP
Snapshot pair will not be restored even if the command ends normally.
Deleting Snapshot Data
Use the pairresync command of the RAID Manager to delete snapshot data. You can store up to 64
snapshot data per P-VOL. Therefore, if you want to store the new snapshot data in a P-VOL that already
has 64 snapshot data, you need to delete the old snapshot data.
If you delete snapshot data, free area in the pool will increase. To increase the free area in the pool,
delete snapshot data by issuing the pairresync command on the XP Snapshot pairs in PSUS status.
However, if the snapshot data you try to delete shares a data area with other snapshot data, only the
snapshot ID will be deleted and the data itself will not be deleted from the pool.
For details about the pairresync command, see the HP StorageWorks XP RAID Manager User’s Guide.
Note: XP Snapshot does not support Quick Resync mode. If you specify Quick Resync mode, snapshot
data will not be deleted even if the command ends normally.
Deleting XP Snapshot Pairs
Use the command of the RAID Manager or the Pairsplit-S dialog box to delete XP Snapshot pairs.
If you use the RAID Manager to delete XP Snapshot pairs, you need to use the pairsplit -S command. By
using this command, you can delete only one pair at a time. For details about the pairsplit -S command,
see the HP StorageWorks XP RAID Manager User’s Guide.
If you use the Pairsplit-S dialog box, you can delete multiple pairs at a time. You can open the Pairsplit-S
dialog box either from Business Copy’s Pair Operation window or the XP Snapshot window. To select
the pairs to be deleted by port or host group, open the Pairsplit-S dialog box from the Pair Operation
window. To select the pairs by pool, open the Pairsplit-S dialog box from the XP Snapshot window.
Deleting XP Snapshot Pairs by Selecting the Pairs per Port
To delete XP Snapshot pairs by selecting the pairs per port:
1. Change the mode of the Remote Web Console to Modify.
If the mode is already changed to Modify, you can skip this step. For information on how to
change the mode, see the HP StorageWorks XP24000 Remote Web Console User’s Guide.
2. Display the Pair Operation window.
3. In the tree, select the port or host group that contains the XP Snapshot pairs you want to delete.
XP24000 Snapshot User's Guide 65