Software Manual

Cache LUN XP user guide for the XP10000/XP12000 5

About this guide

This guide provides information about the following:

• ”Supported volumes” on page 9

• ”Cache LUN XP tasks” on page 9

• ”Supported emulation types and other parameters” on page 9

• ”Restrictions” on page 10

• ”Cache LUN XP modes” on page 11

• ”Pre-staging” on page 12

• ”Required cache size for Cache LUN XP” on page 13

• ”Starting Cache LUN XP” on page 16

• ”Setting (creating) a cache extent” on page 18

• ”Partial Cache Residence (PCR) operations” on page 22

Intended audience

This guide is intended for customers and HP-authorized service providers with knowledge of the following:

• Disk array hardware and software

• Data processing and RAID storage subsystems and their basic functions

Prerequisites

Prerequisites for using this product include:

• Installation of the HP StorageWorks disk array(s)

• Installation of the license key for this product

Firmware versions

The recommended firmware versions shown below provide the optimal level of support for the features

provided with this product. Older firmware versions can be used; however, product features enabled with

newer firmware will not appear.

Table 1 Recommended and minimum firmware versions