Compaq ProLiant Cluster HA/F500 for Enterprise Virtual Array Setup and Installation Guide

Glossary
ProLiant Cluster HA/F500 for Enterprise Virtual Array Setup and Installation Guide Glossary-3
COMPAQ CONFIDENTIAL
Writer: Woody Jernigan File Name: h-glossary
Codename: 49er Part Number: 268374-002 Last Saved On: 5/28/02 3:10 PM
dual-loop
A configuration where each drive is connected to a pair of controllers through two loops.
These two Fibre Channel loops constitute a loop pair.
dual-redundant configuration
A controller configuration consisting of two active controllers operating as a single controller.
If one controller fails, the other controller assumes control of the devices on the failing
controller.
Enterprise Virtual Array
The Compaq name used to describe the storage system that includes HSV controllers, storage
devices, enclosures, cables, and power supplies. Also known as the Enterprise Storage
System.
Ethernet
A standard network protocol that operates mostly on a physical level, using network interface
cards and cabling to transmit data between computers. Transfer rates are normally 10 or
100 megabits per second.
fabric
The multiple Fibre Channel switches interconnected and using Fibre Channel methodology
for linking nodes and routing frames in a Fibre Channel network.
failback
1. The process that takes place when a previously failed controller is repaired or replaced and
reassumes the workload from a companion controller.
2. The process that takes place when the operation of a previously failed cluster group moves
from one cluster node back to its primary node.
failover
1. The process that takes place when one controller in a dual-redundant configuration
assumes the workload of a failed companion controller. Failover continues until the failed
controller is repaired or replaced.
2. The process that takes place when the operation of a cluster group moves from one cluster
node to another node in the same cluster.