Path: utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!ames!elroy!ucla-cs!usc!randvax!ism780c!ico!clover!rcd
From: rcd@ico.ISC.COM (Dick Dunn)
Newsgroups: comp.unix.xenix,comp.unix.i386
Subject: Re: ESDI vs SCSI (bus speed)
Summary: so I get to try again...
Message-ID: <15745@clover.ICO.ISC.COM>
Date: 18 Apr 89 17:36:14 GMT
References: <98520@sun.Eng.Sun.COM> <5436@lynx.UUCP> <15739@clover.ICO.ISC.COM>
Distribution: na
Organization: Interactive Systems Corp, Boulder, CO
Lines: 11

In article <15739@clover.ICO.ISC.COM>, I screwed up...
> ...I notice we're running ESDI 63-sector drives at 1:1.

63 is the "logical" number of sectors, which is a game in the controller to
get you around the 10-bit limit on number of cylinders.  (They fake a
higher number of heads and spt to get the cylinder count under 1024.)  The
disks are physically 34 spt.  They still do run 1:1 and they are pretty fast,
though.
-- 
Dick Dunn      UUCP: {ncar,nbires}!ico!rcd           (303)449-2870
   ...Never offend with style when you can offend with substance.