Raid Overview; Physical Drives; Arrays - HP D5970A - NetServer - LCII Configuration Manual

2 RAID Overview

This chapter summarizes concepts and terminology used to describe RAID
systems. It describes the different RAID levels available with the integrated HP
NetRAID controller. For definitions of terms not introduced here, see the
Glossary.
RAID Overview
The integrated HP NetRAID controller lets you link multiple hard disk drives
together and write data across them as if they were one large drive. With the
integrated HP NetRAID controller, you can configure your linked drives into a
RAID (Redundant Array of Independent Disks) subsystem.

Physical Drives

The term "physical drive" refers to a single hard disk module.

Arrays

The integrated HP NetRAID controller can combine up to eight physical drives
into one array. It is recommended that all drives in an array have the same
capacity. If you use drives with different capacities in an array, all the drives in
the array are treated as though they have the capacity of the smallest drive.
Figure 2-1. Physical Drive
Figure 2-2. Array of Physical Drives
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