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

Glossary
Glossary-2 ProLiant Cluster HA/F500 for Enterprise Virtual Array Setup and Installation Guide
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Writer: Woody Jernigan File Name: h-glossary
Codename: 49er Part Number: 268374-002 Last Saved On: 5/28/02 3:10 PM
availability
A measure of how well a computer system or cluster can continuously deliver services to its
clients. Availability is typically expressed as a percentage, with 100 percent being the best
possible rating.
cluster
A group of systems that work collectively as a single system to provide fast, uninterrupted
computing service. Clustering is a way to increase availability, processing capacity, and
I/O bandwidth.
cluster group
A collection of interdependent resources that logically represents a clustered client/server
function. This is a user-definable entity used by Microsoft Cluster Server software.
container
1. Any entity that is capable of storing data, whether it is a physical device or a group of
physical devices.
2. A virtual, internal controller structure representing either a single disk or a group of disk
drives linked as a storage set.
controller
A hardware device that, with proprietary software, facilitates communications between a host
and one or more devices organized in an array.
controller pair
Two interconnected controller modules that together control a physical disk array. A
controller pair and the disk array together constitute a storage system.
disk group
A physical disk drive set or pool in which a virtual disk is created. A disk group may contain
all the physical disk drives in a controller pair array or a subset of the array.
driver
A hardware device or a program that controls or regulates another device. For example, a
device driver is a driver developed for a specific device that allows a computer to operate
with that device, such as a printer or a disk drive.