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6-2 Chapter 6: RAID Conguration
6.1 RAIDcongurations
The server system/motherboard comes with the Intel
®
ICH7R and the LSI Software
RAID technology built-in the Intel
®
ICH7R SouthBridge chipset that allows you to
congure IDE and Serial ATA hard disk drives as RAID sets. The motherboard
supports the following RAID congurations:
6.1.1 RAIDdenitions
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 conguration 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 created 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 7.1
RAID driver installation for details.