HP DL320 HP ProLiant DL320 Generation 2 Server Setup and Installation Guide - Page 81

RAID Terminology, RAID 0 (Stripe), RAID 1 (Mirror), RAID 1+0, RAID 5

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RAID Configuration and Management RAID Terminology IMPORTANT: Only RAID levels 0 and 1 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. RAID 1 (Mirror) RAID 1 is a RAID level that involves duplicating all data from one drive to a second drive (mirroring). RAID 1 provides complete data redundancy, but at the cost of doubling the required data storage capacity. A minimum of two hard drives are required to support RAID 1. RAID 1+0 RAID 1+0 is not supported by the ProLiant DL320 Generation 2 server or the Integrated ATA RAID Configuration Utility. RAID 1+0 (also known as RAID 10) is a RAID level that provides both striping and mirroring capabilities. RAID 1+0 mirrors data from one drive to another and then stripes the data across a second set of drives. Four hard drives are required to support RAID 1+0 on the server. RAID 5 RAID 5 is not supported by the ProLiant DL320 Generation 2 server or the Integrated ATA RAID Configuration Utility. It is a RAID level that stripes data and parity information across drives and requires a minimum of three hard drives. 6-2 HP ProLiant DL320 Generation 2 Server Setup and Installation Guide

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RAID Configuration and Management
RAID Terminology
IMPORTANT:
Only RAID levels 0 and 1 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.
RAID 1 (Mirror)
RAID 1 is a RAID level that involves duplicating all data from one drive to a second
drive (mirroring). RAID 1 provides complete data redundancy, but at the cost of
doubling the required data storage capacity. A minimum of two hard drives are
required to support RAID 1.
RAID 1+0
RAID 1+0 is not supported by the ProLiant DL320 Generation 2 server or the
Integrated ATA RAID Configuration Utility. RAID 1+0 (also known as RAID 10) is
a RAID level that provides both striping and mirroring capabilities. RAID 1+0
mirrors data from one drive to another and then stripes the data across a second set of
drives. Four hard drives are required to support RAID 1+0 on the server.
RAID 5
RAID 5 is not supported by the ProLiant DL320 Generation 2 server or the
Integrated ATA RAID Configuration Utility. It is a RAID level that stripes data and
parity information across drives and requires a minimum of three hard drives.
6-2
HP ProLiant DL320 Generation 2 Server Setup and Installation Guide