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3-2 Chapter 3: RAID conguration

3.1 Setting up RAID

The RAID card supports RAID 0, RAID 1, and RAID 10 set(s).

3.1.1 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 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.

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.

3.1.2 Installing hard disk drives

The RAID card supports SATA hard disk drives for RAID set conguration. For

optimal performance, install identical drives of the same model and capacity when

creating a disk array.

To install SATA hard disk drives for RAID conguration

1. Install the SATA drives into the drive bays following the instructions in the

system user guide.

2. Connect a SATA signal cable to the signal connector at the SATA backplane

or on the back of the SATA drive.

3. Connect a power cable to the power connector at the SATA backplane or on

the back of the SATA drive.

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