Raid Levels - LanParty X48-T3RS User Manual

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Chapter 3 - RAID
The Intel ICH9R chip alows configuring RAID on Serial ATA drives
connected to SATA 1 to SATA 6. It suppor ts RAID 0, RAID 1,
RAID 0+1 and RAID 5.
The JMicron JMB363 chip allows configuring RAID on another 2 Se-
rial ATA drives connected to SATA 7 and SATA 8. It suppor ts
RAID 0 and RAID 1.

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 alternately between two disk drives. This im-
proves the I/O performance of the drives at different channel; how-
ever 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 0+1 (Striping and Mirroring)
RAID 0+1 is a combination of data striping and data mirroring
providing the benefits of both RAID 0 and RAID 1. Use four new
drives or an existing drive and three new drives for this
configuration.
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.
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