HP StorageWorks Snapshot XP user guide (T1713-96023, October 2006)

CAUTION:

If you are using HP-UX® as a host server, observe the follo wing when executing the command on

V-VOLs to recognize the device from the host server:

• If the host serv er already r ecognizes the device, do not change its volumes to V-VOLs.

• Before executing the command to recognize the device, create Snapshot XP pai rs and store snapshot

data.

If you do not follow these cautions, an error might occur and the host server might be terminated. If the

host server is terminated because of the command to recognize the device, retry the command using the

following steps:

1. Force the command process and its parent p rocess to terminate.

2. Create a Snapshot XP p air.

3. Store the snapshot data in the pool.

4. Execute the command again to recognize the device.

NOTE:

• Servers (including RAID Manager XP) show V-VOLs with emulation type 0 (for example, OPEN-0V ).

When creating a Snapshot XP pair, specify the volume with emulation type 0, such as O PEN-0V, as

the S-VOL.

• Before creating a V-VOL, you must deﬁne a V-VOL group. The emulation type of the V-VOLs and the

emulationtypeoftheVDEVforaV-VOLgroupareOPEN-V.Inaddition,theVDEV'scapacityis

always 2 TB. Therefore, the maximum capacity of a V-VOL is also 2 TB.

To delete a V-VOL, use the V-VOL pane in Command View XP or XP Remote Web Console. For more

informa

tion, see Creating or deleting virtual volumes.

Creating Snapshot XP pairs

ASnapshotXPpairusesaV-VOLasitsS-VOL.Therefore,youmustcreateaV-VOLbeforecreatinga

Snapshot XP pair. In Snapshot XP, you c an specify up to 64 S-VOLs for a P-VOL.

To create Snapshot XP pairs, use a RA ID Manager XP command. For more information, see Creating

Snapshot XP pairs.

CAUTION:

When creating Snapshot XP pairs, you decide which pool the pairs use. If you create two or more

Snapshot XP pairs that share the same P-VOL, you must specify the same pool for these pairs. For

example, if you specify three S-VOLs for one P-VOL, you must specify the same pool for these three pairs.

Snapshot XP functions