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SubjectRe: [OFFTOPIC] Re: disk head scheduling
On Tue, 23 Mar 1999, Alan Modra wrote:

>
> [cc list mercifully trimmed]
>
> On Mon, 22 Mar 1999, Richard B. Johnson wrote:
>
> > On Sun, 21 Mar 1999, Guy Sotomayor wrote:
> >
> > > (not a terribly fast drive) that has ~10000 cylinders (yes 10^4), 28 heads
> >
> > I was talking about physical cylinders. There is no way in hell you
> > have 10,000 cylinders on a disk drive.
>
> http://www.fujitsu.co.jp/hypertext/hdd/drive/overseas/mpd3xxxah/mpd3xxxah.html
>
> 12555 cylinders, 13250 tracks per inch, 269951 bits per inch
>

Hot damn! You got me. Do you think it's real or virtual. I think they
include the heads, in other words tracks = cylinders. If not, they have
a real invention to keep a head centered over a track that is less than
1/12555 inch in width (0.00007965 in) think about it.

Cheers,
Dick Johnson
***** FILE SYSTEM WAS MODIFIED *****
Penguin : Linux version 2.2.3 on an i686 machine (400.59 BogoMips).
Warning : It's hard to remain at the trailing edge of technology.


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