6
RAID Configuration and Management
Introduction to RAID
Overview of RAID
Redundant array of independent drives (RAID) is an array of multiple independent
hard drives that can be accessed simultaneously, improving I/O (input/output)
performance. The host computer recognizes the RAID array as a single storage unit
or as multiple logical units. When a drive fails, RAID 1 and RAID 1+0 arrays can
prevent data loss by reconstructing missing data from the remaining data drives.
RAID Terminology
IMPORTANT: Only RAID levels 0, 1, and 1+0 are supported by the Integrated ATA RAID
Configuration Utility.
RAID 0 (Stripe)
RAID 0 is a RAID level that involves breaking up data into smaller blocks and then
writing a block to each drive in the array (striping). RAID 0 does not provide any
data redundancy, but does offer the best performance of any RAID level.
HP ProLiant ML330 Generation 3 Server Setup and Installation Guide 6-1
HP CONFIDENTIAL
Writer: Rob Weaver File Name: g-ch6 RAID Configuration and Management.doc
Codename: Flashback Part Number: 322383-001 Last Saved On: 2/11/03 1:28 PM
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