HP StorageWorks Snapshot XP user guide (December 2005)

18 Snapshot XP

distinguish between SMPL and SMPL(PD) volumes using RAID Manager, issue the inqraid command

as well. The inqraid command shows whether Snapshot XP is using the volume. As a result of the

inqraid command, if Snapshot XP is not using the volume, the volume status is SMPL. If Snapshot XP

is using the volume, the volume status is SMPL(PD).

Referencing Snapshot XP pair information

Information about Snapshot XP pairs, such as snapshot ID or pair status, can be referenced on the Detail

pane in Command View XP or XP Remote Web Console. For more information, see ”Deleting Snapshot XP

pairs” on page 47.

In addition, operation history for Snapshot XP pairs, such as creating or deleting Snapshot XP pairs and

storing snapshot data, can be referenced on the History pane. For more information, see ”Displaying

detailed information about Snapshot XP pairs” on page 51.

Snapshot XP operations

This section describes requirements for using Snapshot XP, installing Snapshot XP, and calculating the

number of pairs that Snapshot XP can create.

Requirements for using Snapshot XP

For requirements of volumes used for Snapshot XP, see ”Volumes Snapshot XP uses” on page 13.

Installing Snapshot XP

1. Install additional shared memory for differential tables.

2. Install additional shared memory for the V-VOL management area.

When using an XP10000, you do not need to install additional shared memory. You only need to

define shared memory for the V-VOL management area.

3. Install Business Copy XP, which is a prerequisite for Snapshot XP.

4. Install Snapshot XP.

NOTE:

• Contact your HP Account Support Representative to install additional shared memory for the V-VOL

management area.

Table 4 Requirements for using Snapshot XP

Item Requirement

RAID level RAID1, RAID5, or RAID6

Shared memory Shared memory for the differential table must be installed on the base board.

Shared memory must be configured so the V-VOL management area can be created

in the shared memory.

For the XP12000, you must reserve from 512 MB × 2 to 2 GB × 2 capacity of the

shared memory for the V-VOL management area on the optional board.

For more

information, see ”Calculating the number of Snapshot XP pairs that can be created”

on page 19.

1. Because the XP10000 does not have the optional board, you must reserve 342 MB × 2 capacity of the shared memory on the

basic board if you are using the XP10000.

Prerequisite software product Business Copy XP must be installed.

Pool The pool must be created. The pool’s maximum capacity changes with shared

memory’s capacity.

V-VOL The V-VOL must be created.

Operation Command View XP or XP Remote Web Console and RAID Manager are required to

operate Snapshot XP.