VERITAS Volume Manager 3.1 Reference Guide

110 Chapter3
Disk Arrays
Disk Array Overview
Figure 3-1 Standard Disk Array
Redundant Arrays of Independent Disks (RAID)
A Redundant Array of Independent Disks (RAID) is a disk array set
up so that part of the combined storage capacity is used for storing
duplicate information about the data stored in the array. The duplicate
information allows you to regenerate the data in case of a disk failure.
Several levels of RAID exist. These are introduced in the following
sections.
NOTE The Volume Manager supports RAID levels 0, 1, and 5 only.
Disk 1
Disk 2
Disk 3
Disk 4
Virtual
Disk(s)
Operating System
Member Disks
Array