HP StorageWorks IBM AIX Kit V3.0B for Enterprise Virtual Array Installation and Configuration Guide (AA-RUHAB-TE, October 2003)

Glossary

50 IBM AIX Kit V3.0B for Enterprise Virtual Array Installation and Configuration Guide

communication logical unit number (LUN)

See console LUN.

console LUN

A SCSI-3 virtual object that makes a controller pair accessible by the host before any virtual

disks are created. Also called a communication LUN.

console LUN ID

The ID that can be assigned when a host operating system requires a unique ID. The

console LUN ID is assigned by the user, usually when the storage system is initialized.

See also console LUN.

controller

A hardware/firmware device that manages communications between host systems and other

devices. Controllers typically differ by the type of interface to the host and provide

functions beyond those the devices support.

controller pair

Two interconnected controller modules which together control a physical disk array. A

controller pair and the disk array together constitute a storage system.

Enterprise Virtual Array

The HP name used to describe the storage system that includes HSV controllers, storage

devices, enclosures, cables, and power supplies. Also called the Enterprise Storage System.

fabric

A Fibre Channel fabric switch, or two or more interconnected Fibre Channel switches

allowing data transmission.

fabric port

A port that is capable of supporting an attached arbitrated loop. This port on a loop will

have the AL_PA hexadecimal address 00 (loop ID 7E), giving the fabric the highest priority

access to the loop. A loop port is the gateway to the fabric for the node ports on a loop.

failover

The process that takes place when one controller assumes the workload of a failed

companion controller. Failover continues until the failed controller is operational.

FC HBA

Fibre Channel Host Bus Adapter. An interchangeable term for Fibre Channel adapter.