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From: gsk@khaki
Newsgroups: comp.sys.att
Subject: interleave and disk performance
Message-ID: <6699@sgi.SGI.COM>
Date: Tue, 6-Oct-87 16:45:46 EDT
Article-I.D.: sgi.6699
Posted: Tue Oct  6 16:45:46 1987
Date-Received: Fri, 9-Oct-87 23:03:55 EDT
References: <2310@sphinx.uchicago.edu> <710@neoucom.UUCP> <2119@ihlpe.ATT.COM>
Sender: daemon@sgi.SGI.COM
Organization: Silicon Graphics Inc, Mountain View, CA
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sounds like you guys have done some excellent work.

can anybody tell me what interleave (and step rate?) to use with
the DTC 5150BX controller (the one AT&T OEMs from DTC) and an ST225
on my 6300 running DOS 3.2 ?

once i know what parameters to use, how do i do a low-level format with them?
(the DTC ROM formatting routines don't ask you for any parameter values)

data for other drives with the above system are also of interest to me,
since i'm thinking about adding another drive to my system.


while we're on the subject of disk performance, has anyone compared
various controllers against each other w.r.t. performance?
is anyone successfully using controllers that do whole-track buffering,
caching, etc?


George S. Kong,  Silicon Graphics, Inc.,  (415)962-3281
gsk@sgi.com
...{decwrl,allegra,sun,adobe,ucbvax,pyramid,ames}!sgi!gsk