DFI SB630-CRM User Manual download pdf (Page 131)

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RAID

The system board allows conﬁ guring RAID on Serial ATA drives. It supports RAID

0, RAID 1, RAID 5 and RAID 10.

RAID Levels

RAID 0 (Striped Disk Array without Fault Tolerance)

RAID 0 uses two new identical hard disk drives to read and write data in parallel,

interleaved stacks. Data is divided into stripes and each stripe is written alter-

nately between two disk drives. This improves the I/O performance of the drives

at different channel; however it is not fault tolerant. A failed disk will result in

data loss in the disk array.

RAID 1 (Mirroring Disk Array with Fault Tolerance)

RAID 1 copies and maintains an identical image of the data from one drive to

the other drive. If a drive fails to function, the disk array management software

directs all applications to the other drive since it contains a complete copy of the

drive’s data. This enhances data protection and increases fault tolerance to the

entire system. Use two new drives or an existing drive and a new drive but the

size of the new drive must be the same or larger than the existing drive.

RAID 5

RAID 5 stripes data and parity information across hard drives. It is fault tolerant

and provides better hard drive performance and more storage capacity.

RAID 10 (Mirroring and Striping)

RAID 10 is a combination of data striping and data mirroring providing the ben-

eﬁ ts of both RAID 0 and RAID 1. Use four new drives or an existing drive and

three new drives for this conﬁ guration.

Chapter 5 - RAID

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DFI SB630-CRM User Manual Page 131