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From: Robert Shady <rls@mail.id.net>
Message-Id: <199611291921.OAA29480@server.id.net>
Subject: Re: Differential vs. Standard
In-Reply-To: <199611291808.TAA26596@uriah.heep.sax.de> from J Wunsch at "Nov 29, 96 07:08:10 pm"
To: j@uriah.heep.sax.de (J Wunsch)
Date: Fri, 29 Nov 1996 14:21:30 -0500 (EST)
Cc: chat@freebsd.org, rls@mail.id.net
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> As Robert Shady wrote:
> 
> > 2. What exactly does "Differential" mean?  Does it help, or hurt?
> >    Differential drives appear to cost slightly more than the standard
> >    versions, which leads me to believe that they may be better in some
> >    way shape or form.
> 
> It has a better signal/noise ratio.  Hence you're allowed to have
> longer cables.  The downside: you need differential interfaces on _any
> and all_ devices on this bus, including but not limited the controller
> itself.

Does this mean I need a "special" controller for these drives, or will
any SCSI controller work as long as I don't have anything but differential
drives on the SCSI chain?

	-- Rob
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