LSI MegaRAID SCSI 320-2 RAID Controller Series 518 Hardware Manual page 40

3.4 RAID 5
3-4
Figure 3.2 RAID 1 Array
MegaRAID Controller
Segment 1
Segment 2 Segment 2 Duplicated
Segment 3 Segment 3 Duplicated
Segment 4
RAID 5 includes disk striping at the byte level and parity. In RAID 5, the
parity information is written to several drives. RAID 5 is best suited for
networks that perform many small I/O transactions simultaneously.
RAID 5 addresses the bottleneck issue for random I/O operations. Since
each drive contains both data and parity, numerous writes can take place
concurrently. In addition, robust caching algorithms and hardware based
RAID Levels
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Segment 1 Duplicated
Segment 4 Duplicated