Compaq ProLiant Cluster HA/F500 Administrator Guide

Glossary
ProLiant Cluster HA/F500 for MA8000 Administrator Guide Glossary-5
COMPAQ CONFIDENTIAL
Writer: Woody Jernigan File Name: i-glossary
Codename: Chargers Part Number: 355220-006 Last Saved On: 7/26/02 2:56 PM
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.
loop
See arbitrated loop.
LUN
See logical unit (LUN).
maintenance terminal
An EIA-423-compatible terminal used with the controller. This terminal is used to identify
the controller, enable host paths, enter configuration information, and check the controller
status. See also local terminal.
multibus
A dual controller, dual adapter, storage subsystem configuration in which both controller-
adapter I/O paths have access to separate logical units. Also known as active/active.
NIC
Network Interface Controller. A board that allows a computer to be connected with a network
and that works with the network operating system to control the flow of information over the
network.
node
An individual server in a cluster.
NTFS
NT File System. A file organization system by which data is stored and accessed in a
Windows NT operating system.
other controller
In a dual-controller configuration, the storage controller that is not connected to the
maintenance terminal cable. See also this controller.