last fall I did a little experimentation with a pair of WD20EARS drives (which
are 2TB "advanced format" drives with 4K physical and 512 byte logical sectors).
In my admittedly not particularly demanding and not particularly scientific
tests, I saw little difference in performance between ashift=9 (512) and
ashift=12 (4K) but significantly increased disk space usage, so I left them as
ashift=9.
Has anyone taken a more thorough look at this to better characterize the space
vs. speed tradeoff?
- Bill
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