Path: utzoo!utgpu!water!watmath!clyde!att!osu-cis!tut.cis.ohio-state.edu!bloom-beacon!mit-eddie!uw-beaver!uw-june!uw-entropy!dataio!suvax1!woodman
From: woodman@suvax1.UUCP (David Woodman)
Newsgroups: comp.sys.ibm.pc
Subject: Re: Seagate ST-251 question
Summary: my 2 cents
Message-ID: <1224@suvax1.UUCP>
Date: 26 Sep 88 00:14:05 GMT
References: <251@fsc2086.UUCP> <16800373@clio> <606@dasher.SanDiego.NCR.COM>
Organization: Seattle University, Seattle, WA.
Lines: 22

> In article <16800373@clio> berger@clio.las.uiuc.edu writes:
>>
>>The ST-251 has 820 cylinders, 4 heads, and 17 sectors per track.
>                                ~~~~~~~~
> My book shows that it has 6 heads. 

  And the ST-251 only has 17 sectors per track IF formatted by an 
  MFM controller. It will have 26 sectors per track if formatted by
  an RLL controller. I know, I know, the ST-251 is spec'd as an MFM
  drive but a friend of mine is running it on an RLL controller.
  I don't advocate it, but it seems to work.  

  (P.S. The ST-251 seems to come in two flavors, 40ms & 28ms. When I
   bought mine, it turned out to be 28ms but was charged for the 40ms.
   Either the company did not know the difference or there is something
   I don't know about.)

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 David Woodman		UUCP:    ...!uw-entropy!dataio!suvax1!woodman
 Seattle University	USNail:  P.O. Box 23202, Seattle WA 98102
 			Phone:	 (206) 223-9470
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