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Chapter 3 - RAID
The Intel ICH10R chip alows configuring RAID on Serial ATA drives. It supports RAID 0, RAID 1, RAID 0+1 and RAID 5.
RAID Levels
RAID 0 (Striped Disk Array without Fault Tolerance)
RAID 0 uses two new identical hard disk drives to read and write data in parallel, interleaved stacks. Data is divided into stripes and each stripe is written alternately between two disk drives. This im- proves the I/O performance of the drives at different channel; how- ever it is not fault tolerant. A failed disk will result in data loss in the disk array.
RAID 1 (Mirroring Disk Array with Fault Tolerance)
RAID 1 copies and maintains an identical image of the data from one drive to the other drive. If a drive fails to function, the disk array management software directs all applications to the other drive since it contains a complete copy of the drive’s data. This enhances data protection and increases fault tolerance to the entire system. Use two new drives or an existing drive and a new drive but the size of the new drive must be the same or larger than the existing drive.
RAID 0+1 (Striping and Mirroring)
RAID 0+1 is a combination of data striping and data mirroring provid- ing the benefits of both RAID 0 and RAID 1. Use four new drives or an existing drive and three new drives for this configuration.
RAID 5
RAID 5 stripes data and parity information across hard drives. It is fault tolerant and provides better hard drive performance and more storage capacity.
Settings
To enable the RAID function, the following settings are required.
1.Connect the Serial ATA drives.
2.Configure Serial ATA in the Award BIOS.
3.Configure RAID in the RAID BIOS.
4.Install the RAID driver during OS installation.
5.Install the Intel Matrix Storage Manager
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