Below you will find a table that summarizes the key quantitative attributes of the various RAID levels for easy comparison. For the full details on any RAID level, see its own page, accessible here . For a description of the different characteristics, see the discussion of factors differentiating RAID levels . Storage efficiency assumes all drives are of identical size. Performance rankings are approximations and to some extent, reflect my personal opinions.
Cost is relative and approximate, of course.
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