Asus P5LD-MR User Manual download pdf (Page 99)

ASUS P5LD-MR 5-1

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 definitions

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 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.

RAID 10 is a striped conguration with RAID 1 segments whose segments

are RAID 1 arrays. This conguration has the same fault tolerance as

RAID 1, and has the same overhead for fault-tolerance as mirroring alone.

RAID 10 achieves high input/output rates by striping RAID 1 segments. In

some instances, a RAID 10 conguration can sustain multiple simultaneous

drive failure. A minimum of four hard disk drives is required for this setup.

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 “6.1 RAID driver installation” for details.

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Asus P5LD-MR User Manual Page 99

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