Date: Wed, 28 Jun 2000 12:17:46 -0700 (PDT) From: Matthew Jacob <mjacob@feral.com> To: steinyv <steinyv@skyweb.net> Cc: freebsd-hardware@FreeBSD.ORG Subject: Re: SCSI Message-ID: <Pine.BSF.4.05.10006281217300.27226-100000@semuta.feral.com> In-Reply-To: <4.2.0.58.20000628145800.009e8b80@>
next in thread | previous in thread | raw e-mail | index | archive | help
On Wed, 28 Jun 2000, steinyv wrote: > I have some regular scsi hard drives and cdrom, could I use these with a > differential controller?? No: > >Do *not* mix non-differential or differential devices. Devices have gotten > >more resilient, but you could certainly fry things that way. > > At 01:12 PM 6/28/00 , you wrote: > > >It's a signal level issue, not a performance issue. Rather than TTL -5v to 0v > >at 40ma, it's +5/-5 (IIRC) with micro-electric chair amperage. > > > >The only practical effect of using differential is you can run a *much* longer > >cable. > > > >Do *not* mix non-differential or differential devices. Devices have gotten > >more resilient, but you could certainly fry things that way. > > > >Note that LVD (low voltage differential) is a different thing entirely. > >I won't go into that- check any one of the HBA or Drive vendor's websites- > >you'll find overviews of that there (or see http://www.ultra160-scsi.com > >for Ultra3). > > > >On Wed, 28 Jun 2000, steinyv wrote: > > > > > Please excuse me, but does a differential scsi card differ from a regular > > > one, in what way? Could I use them with FBSD? What should I look out for? > > > Thank You gurus > > > :) > > > > > > _________________________________________ > > > Steiny's Studio > > > Pachyderm Productions > > > http://steiny.hypermart.net > > > > > > > > > To Unsubscribe: send mail to majordomo@FreeBSD.org > > > with "unsubscribe freebsd-hardware" in the body of the message > > > > > > _________________________________________ > Steiny's Studio > Pachyderm Productions > http://steiny.hypermart.net > > > To Unsubscribe: send mail to majordomo@FreeBSD.org > with "unsubscribe freebsd-hardware" in the body of the message > To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hardware" in the body of the message
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?Pine.BSF.4.05.10006281217300.27226-100000>