From owner-freebsd-hackers Fri Feb 18 17: 8:24 2000 Delivered-To: freebsd-hackers@freebsd.org Received: from smtp02.teb1.iconnet.net (smtp02.teb1.iconnet.net [209.3.218.43]) by hub.freebsd.org (Postfix) with ESMTP id 9625637BB37 for ; Fri, 18 Feb 2000 17:08:19 -0800 (PST) (envelope-from babkin@bellatlantic.net) Received: from bellatlantic.net (client-117-231.bellatlantic.net [151.198.117.231]) by smtp02.teb1.iconnet.net (8.9.1/8.9.1) with ESMTP id UAA28017; Fri, 18 Feb 2000 20:08:10 -0500 (EST) Message-ID: <38ADEECE.94222AB0@bellatlantic.net> Date: Fri, 18 Feb 2000 20:15:58 -0500 From: Sergey Babkin X-Mailer: Mozilla 4.7 [en] (X11; U; FreeBSD 4.0-19990626-CURRENT i386) X-Accept-Language: ru, en MIME-Version: 1.0 To: Wilko Bulte Cc: David Scheidt , Banu Ozden , freebsd-hackers@FreeBSD.ORG Subject: Re: scsi target mode References: <20000215194322.B597@yedi.iaf.nl> <20000215233939.A6080@yedi.iaf.nl> Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Sender: owner-freebsd-hackers@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG Wilko Bulte wrote: > > On Tue, Feb 15, 2000 at 04:00:28PM -0600, David Scheidt wrote: > > > > Generally speaking 'joining' machines into cluster(like) you want to > > > use differential SCSI buses. > > > > Yes. Of course, I think that you want to use differential SCSI for > > everything. Cableing is much easier, and much less fussy. It costs more > > though. > > And consumes a bit more power due to all the external diff xceiver chips. > For in-cabinet single-ended or LVD works just fine. http://www.scsipro.com They make the Y-connectors. They also make the retranslators that can increase the maximal length of the cable dramatically (or at least their web site says so - did not try it myself yet). For the good and reasonably priced cables and terminators I can recommend AESP (http://www.aesp.com , http://www.tla-group.com is the reseller I bought from, had quite good experience). Personally I think that Fibre Channel may be a better choice for the clusters because of thinner cables and longer maximal length. Though it's more expensive. -SB To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message