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Software RAID vs. Hardware RAID

Authored on: Jul 25, 2002

Technical Paper

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RAID implementations contain components such as RAID tables defining the configuration of RAID arrays, data structures to store the descriptors for cached data, engine(s) for calculating parity and the logic for handling I/Os to and from RAID arrays. These components may be implemented in software—typically in kernel-mode—or embedded in the controller for the secondary storage devices using which the RAID arrays are created. Which alternative is better? This technical paper answers that question by presenting an analysis of the issues associated with both alternatives and their performance in a real-world environment.



For more information on RAID, visit Adaptec's Web site.


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