Software and hardware annotations 2009 March

This document contains only my personal opinions and calls of judgement, and where any comment is made as to the quality of anybody's work, the comment is an opinion, in my judgement.

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090307 Fri Larger than expected performance differences in similar hard disks

One of the usual very informative and detailed products tests from X-bit Labs shows quite interestingly a fairly large variation in performance among 640GB disk drives.

I would expect some variation, but there is sometimes a factor of 2, which seems amazing, even for low power drives.