UNIX systems used to use disk-layout optimizations based on the rotation position of disk data, but modern
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UNIX systems used to use disk-layout optimizations based on the rotation position of disk data, but modern implementations, including Linux, simply optimize for sequential data access. Why do they do so? Of what hardware characteristics does sequential access take advantage? Why is rotational optimization no longer so useful?
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The performance characteristics of disk hardware has changed substantially in recent years In particular many enhancements have been introduced to inc...View the full answer
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