timothym@tekigm2.UUCP (Timothy D Margeson) (12/05/86)
<A sacrifice to the great Gods of the Etherworld>
The problems I have had with my Seagate WD1002SWX-2 controller are a bit more
involved than I originally thought, but appreciate the reponses of all those
who offerred to try to help.
Problem one, was that I changed O.S.s from DOS 2.11 to DOS 3.10 (both from
Compaq Inc.), this alone made the early on benchmark better than the latest
benchmark.
Secondly, the disk I did the first benchmark on had only 306 cylinders (but
had the same 85mS avg. access time as my ST-225 with 615 cylinders). When
half full, the 306 cyl. disk is faster than the half full 615 disk. Obvious
when you are thinking about it. Not so obvious when looking at two times on
paper.
Between the two (minor?) changes I made to my system, all else was equal. I
also called Western Digital with my problem. I found that earlier controllers
(like mine) did their best at interleaves of 4, and sometimes 6 (sounds like
a real process control problem), not the int=3 that they claimed in the manual
they distributed.
Oh well, I just bought an Adaptec 2010A as it works at an interleave of 2,
and is as fast as my AT at work.
--
Tim Margeson (206)253-5240
PO Box 3500 d/s C1-937 @@ 'Who said that?'
Vancouver, WA. 98668
{amd..hplabs}cae780!tektronix!tekigm2!timothym (this changes daily)