User Manual

6-2 Chapter 6: RAID conguration
6.1 Setting up RAID
The motherboard supports the following SATA RAID solutions:
• LSIMegaRAIDsoftwareRAIDCongurationUtility
with RAID 0, RAID 1,
and RAID 10 support (for both Linux and Windows OS).
•
Intel Rapid Storage Technology enterprise SCU / SATA Option ROM Utility
with RAID 0, RAID 1, RAID 10, and RAID 5 support (for Windows OS only).
6.1.1 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 complete 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.
RAID 1E (Enhanced RAID 1) has a striped layout with each stripe unit having a
secondary (or alternate) copy stored on a different disk. You can use three or more
hard disk drives for this conguration.
RAID 10 is data striping and data mirroring combined without parity (redundancy data)
having to be calculated and written. With the RAID 10 conguration you get all the
benets of both RAID 0 and RAID 1 congurations. Use four new hard disk drives or
use an existing drive and three new drives for this setup.
RAID 5 stripes both data and parity information across three or more hard disk drives.
Among the advantages of RAID 5 conguration include better HDD performance,
fault tolerance, and higher storage capacity. The RAID 5 conguration is best suited
for transaction processing, relational database applications, enterprise resource
planning, and other business systems. Use a minimum of three identical hard disk
drives for this setup.
• 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 DVD to a oppy disk
before you install an operating system to the selected hard disk drive.
• Please refer to chapter 2 for how to select the RAID conguration utility. Move
the jumper to choose between LSI MegaRAID and Intel
®
Rapid RAID.