HP ProLiant Cluster HA/F500 for MA8000 Enhanced DT Supplement Guide

Glossary
HP ProLiant Cluster HA/F500 for MA8000 Enhanced DT Supplement Guide Glossary-3
HP CONFIDENTIAL
Writer: Bill Akers File Name: w-glossary
Codename: Chargers II Part Number: 324547-001 Last Saved On: 4/7/03 11:03 AM
logical unit number
1. A value that identifies a specific logical unit belonging to a SCSI target ID number.
2. A number associated with a physical device unit during the I/O operations of a task. Each
task in the system must establish its own correspondence between logical unit numbers and
physical devices.
LUN
See logical unit (LUN).
mirror
A duplicate data image maintained on a separate storage array. In an HA/F500 Enhanced DT
configuration, data is mirrored at a remote site. If a drive in the primary (initiator) storage
subsystem fails, its mirror drive in the remote (target) storage subsystem can provide an exact
copy of the data.
remote
Files, devices, and other resources that are not directly connected to the system being used at
the time.
target site
The location of the secondary network.