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Intel ICH5R Serial ATA RAID Introduction

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What is RAID 0 (striping)?

RAID 0 leverages the read/write capabilities of two or more hard drives

working in unison to maximize the storage performance of a computer system.

Data in a RAID 0 volume is arranged into blocks that are interleaved among

the disks so that reads and writes can be performed in parallel (see below

diagram). This technique, known as "striping", is the fastest of all of the RAID

levels, especially for reading and writing large sequential files. Real world

usage models where RAID 0 can be of particular benefit include loading large

files into an image editing application such as Adobe* Photoshop*, saving

large movie files in a video editing application such as Adobe* Premiere*, or

creating CD or DVD images with a CD/DVD authoring package such as Roxio*

Easy CD Creator*.

The hard drives in a RAID 0 volume are combined to form one volume

which appears as a single virtual drive to the operating system. For example,

two 40 GB hard drives in a RAID 0 array will appear as a single 80 GB hard

drive to the operating system.

No redundancy information is stored in a RAID 0 volume. This means

that if one hard drive fails, all data on both drives is lost. This lack of redun-

dancy is also reflected by the RAID level 0, which indicates no redundancy.

RAID 0 is not recommended for use in servers or other environments where

data redundancy is a primary goal.

Minimum Disks: 2

Advantage: Highest transfer rates

Redundancy: None - if one disk fails all data will be lost

Application: Typically used in desktops and workstations for

maximum performance for temporary data and

high I/O rate

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