5-2 Chapter 5: RAID Conguration
5.1 RAID congurations
The server system/motherboard comes with the Intel® ICH7R and the LSI
Logic Embedded SATA RAID technology built-in the Intel® ICH7R SouthBridge
chipset that allows you to congure IDE and Serial ATA hard disk drives as
RAID sets. The motherboard supports the following RAID congurations:

5.1.1 RAID denitions

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 com-
plete copy of the data in the other drive. This RAID conguration 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.
Intel® Matrix Storage. The Intel® Matrix Storage technology supported by the
ICH7R chip allows you to create a RAID 0 and a RAID 1 set using only two
identical hard disk drives. The Intel® Matrix Storage technology creates two
partitions on each hard disk drive to create a virtual RAID 0 and RAID 1 sets.
This technology also allows you to change the hard disk drive partition size
without losing any data.
If you want to boot the system from a hard disk drive included in a cre-
ated RAID set, copy rst the RAID driver from the support CD to a oppy
disk before you install an operating system to the selected hard disk
drive. Refer to section “6.1 RAID driver installation” for details.