Raid Levels - DFI 790fx-m2r User Manual

Chapter 3 - RAID
The AMD SB600 chip alows configuring RAID on 4 Serial ATA
drives. It suppor ts RAID 0, RAID 1 and RAID 0+1. The Silicon
Image Sil3132 chip allows configuring RAID on another 2 Serial ATA
drives. It supports RAID 0, RAID 1 and RAID 0+1.

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
providing the benefits of both RAID 0 and RAID 1. Use four new
drives or an existing drive and three new drives for this
configuration.
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.
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