Raid Configurations; Installing Hard Disks - Asus P4S800-MX SE User Manual

3.3

RAID configurations

The SIS 964 southbridge comes with a RAID controller that allows you to configure
Serial ATA hard disk drives as RAID sets. The motherboard supports the following
RAID configurations.
RAID 0 (Data striping) optimizes two identical hard disk drives to read and write
data in parallel, interleaved stacks. Two hard disks perform the same work as a
single drive but at a sustained data transfer rate, double that of a single disk alone,
thus improving data access and storage. Use of two new identical hard disk drives
is required for this setup.
RAID 1 (Data mirroring) copies and maintains an identical image of data from one
drive to a second drive. If one drive fails, the disk array management software
directs all applications to the surviving drive as it contains a complete copy of the
data in the other drive. This RAID configuration provides data protection and
increases fault tolerance to the entire system. Use two new drives or use an
existing drive and a new drive for this setup. The new drive must be of the same
size or larger than the existing drive.
JBOD (Spanning) stands for Just a Bunch of Disks and refers to hard disk drives
that are not yet configured as a RAID set. This configuration stores the same data
redundantly on multiple disks that appear as a single disk on the operating system.
Spanning does not deliver any advantage over using separate disks
independently and does not provide fault tolerance or other RAID performance
benefits.
If you want to boot the system from a hard disk drive included in a RAID set,
copy first the RAID driver from the support CD to a floppy disk before you install
an operating system to a selected hard disk drive. Refer to section "3.4 Creating
a RAID driver disk" for details.

3.3.1 Installing hard disks

The motherboard supports Serial ATA hard disk drives. For optimal performance,
install identical drives of the same model and capacity when creating a disk array.
Installing Serial ATA (SATA) hard disks
To install the SATA hard disks for a RAID configuration:
1. Install the SATA hard disks into the drive bays.
2. Connect the SATA signal cables.
3. Connect a SATA power cable to the power connector on each drive.
ASUS P4S800-MX SE motherboard 3-5