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From: scjones@thor.UUCP (Larry Jones)
Newsgroups: comp.sys.ibm.pc.hardware
Subject: Re: Why are SCSI drives so cheap?
Message-ID: <160@thor.UUCP>
Date: 8 Sep 90 18:27:32 GMT
References: <2247@sud509.ed.ray.com> <481.26db8352@sunset.sedd.trw.com> <488.26e76a41@sunset.sedd.trw.com>
Organization: SDRC, Cincinnati
Lines: 22

In article <149@thor.UUCP>, I wrote:
> The Seagate 296N is the same disk as the
> 251-1 (which is a 42Mb MFM drive) -- since the controller is so close
> to the drive they can reliably use an RLL encoding to double the number
> of sectors per track.

In article <488.26e76a41@sunset.sedd.trw.com>, rose@sunset.sedd.trw.com writes:
> If the 296 is simply a 251-1 with a SCSI controller can you buy the SCSI (ST-01)
> and the 251-1 seperately?  The 251-1 with out controller is approx $250-300 
> and the ST-01 is $30.  This would save an additional $50-100 (if allowed).

No.  The ST01 (like all SCSI controllers) is >not< a disk controller --
it's a host adapter that interfaces your computer to the SCSI bus.  The
disk controller is actually a part of the disk drive.  When I said that
the 251 and 296N are the same disk, I meant the actual disk (the heads,
platters, actuator, etc).  The drive electronics are completely different.
----
Larry Jones                         UUCP: uunet!sdrc!thor!scjones
SDRC                                      scjones@thor.UUCP
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