HP StorageWorks Snapshot XP user guide (T1713-96021, June 2006)

Snapshot XP user guide 21

3 Requirements for Snapshot XP operations

This chapter 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 15.

Installing and uninstalling Snapshot XP

This section describes procedures for installing and uninstalling Snapshot XP.

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/SVS200, 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.

• After installing additional shared memory for the V-VOL management area, you cannot partially

uninstall it. To uninstall additional shared memory for the V-VOL management area, you must uninstall

the entire shared memory added for the V-VOL management area.

• Skip step 1 if shared memory for the differential tables is already installed.

• Note that step 2 and step 3 are interchangeable.

• Skip step 3 if Business Copy XP is already installed on the array.

Table 5 Requirements for using Snapshot XP

Item Requirement

RAID level RAID1, RAID5, or RAID6

Shared memory Install shared memory for the differential table on the base board.

Configure shared memory so you can create the V-VOL management area in the

shared memory.

For the XP12000/SVS200, 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 you can create” on

page 22.

1. Because the XP10000/SVS200 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/SVS200.

Prerequisite software product Install Business Copy XP.

Pool Create the pool. The pool’s maximum capacity changes with shared memory’s

capacity.

V-VOL Create the V-VOL.

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

required to operate Snapshot XP.