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Question about multi-platter sector allocation - Page 2

post #11 of 15
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Quote:
Originally Posted by terraprime View Post
yeah no matter what once you get closer to the inside of a platter speeds will drop off significantly about once its half way across the platters, like a 30mbps drop in my 1TB HD103SJ but my max is like 140mbps so its really not that big of a drop to me lol.
Hence the fact/myth of the advantage short-strokers get, correct?
post #12 of 15
Quote:
Originally Posted by returned4good View Post
OK, so if I'm using the first 620GB or so on a 1TB 3 platter drive, all three will contain data rather than just the first 2, right?
Correct.

Quote:
Originally Posted by returned4good View Post
Hence the fact/myth of the advantage short-strokers get, correct?
Short stroking forces the heads to use only the outer edge of the platter(s) where rotation velocity is greater. This is what provides short-stroking's benefit.
Edited by DuckieHo - 4/11/11 at 7:13am
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post #13 of 15
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Quote:
Originally Posted by DuckieHo View Post
Correct.


Short stroking forces the heads to use only the outer edge of the platter(s) where rotation velocity is greater. This is what provides short-stroking's benefit.
Thus, avoiding that drop-off on the end?
post #14 of 15
Quote:
Originally Posted by returned4good View Post
Thus, avoiding that drop-off on the end?
Yes.

On a 7200RPM 3.5" HDD, the outer edge moves at around 107KPH while the inner edge moves at 27KPH.

That is about a 75% speed drop between the outermost and innermost tracks. Performance does not drop quite this fast though since there are other factors.
Edited by DuckieHo - 4/11/11 at 7:16am
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post #15 of 15
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Seems like tighter condensed sectors at the inside would remove that disadvantage since all sides of the patter revolve at the same rate if not speed. I'm sure there's something preventing that or they would have tried that already.
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