Compaq ProLiant Cluster HA/F500 Administrator Guide

ProLiant Cluster HA/F500 for MA8000 Administrator Guide Glossary-1
COMPAQ CONFIDENTIAL
Writer: Woody Jernigan File Name: i-glossary
Codename: Chargers Part Number: 355220-006 Last Saved On: 7/26/02 2:56 PM
Glossary
ACS
See array controller software.
active/active
A dual controller, dual adapter, storage subsystem configuration in which both controller-
adapter I/O paths have access to separate logical units (LUNs). Also known as multibus.
active/standby
A dual controller, single adapter storage subsystem configuration in which one controller is in
an online state and has control of the logical storage units. The other controller is in a standby
state. Also known as transparent.
adapter
A device that converts the protocol and hardware interface of one bus type into another
without changing the function of the bus.
ALPA
See arbitrated loop physical address.
arbitrated loop
A loop type of topology where two or more ports can be interconnected, but only two ports at
a time can communicate.
arbitrated loop physical address (ALPA)
A one-byte value used to identify a port in an arbitrated loop topology.