LSI MegaRAID SCSI 320-1 RAID Controller Series 520 Bedienungsanleitung Seite 40

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Seitenansicht 39
3-4 RAID Levels
Copyright © 2002 by LSI Logic Corporation. All rights reserved.
Figure 3.2 RAID 1 Array
3.4 RAID 5
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
Segment 1
Segment 2
Segment 3
Segment 1 Duplicated
Segment 2 Duplicated
Segment 3 Duplicated
Segment 4 Segment 4 Duplicated
MegaRAID Controller
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