December 2002
Intermediate to advanced
260 pages
9h 18m
English
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RAID-4: Dedicated Parity
RAID-4 works similarly to striping. However, a dedicated drive is used to store parity information. Every time data is written to an array disk, an algorithm generates recovery information that is written to a specially flagged parity drive. In the event of single disk failure, the algorithm can be reversed and missing data can be automatically generated, based on the remaining data and the parity information.
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