From owner-freebsd-questions Sun Dec 12 21:47:39 1999 Delivered-To: freebsd-questions@freebsd.org Received: from sax.sax.de (sax.sax.de [193.175.26.33]) by hub.freebsd.org (Postfix) with ESMTP id 7132A14CDE for ; Sun, 12 Dec 1999 21:47:34 -0800 (PST) (envelope-from mw@theatre.sax.de) Received: (from uucp@localhost) by sax.sax.de (8.9.3/8.9.3) with UUCP id GAA27480; Mon, 13 Dec 1999 06:45:29 +0100 (CET) Received: by theatre.sax.de (8.9.3/8.6.12-s1) id BAA62896; Mon, 13 Dec 1999 01:09:54 +0100 (CET) Date: Mon, 13 Dec 1999 01:09:54 +0100 From: Martin Welk To: John Cc: mw@sax.de, David Bein , freebsd-questions@FreeBSD.ORG Subject: Re: Adaptec/SCSI question ... Message-ID: <19991213010953.I59717@theatre.sax.de> References: <19991212234352.B59717@theatre.sax.de> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii X-Mailer: Mutt 1.0i In-Reply-To: ; from papalia@UDel.Edu on Sun, Dec 12, 1999 at 06:39:05PM -0500 Organization: Private UUCP/Usenet site. X-Phone: +49 3731 458867 X-Operating-System: FreeBSD http://www.freebsd.org/ Sender: owner-freebsd-questions@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG On Sun, Dec 12, 1999 at 06:39:05PM -0500, John wrote: > If I'm understanding what you're saying though, the AHA2930U2W and the > AHA2940U2W now allow you to support devices off of all connectors, as > opposed to needing to keep a linear configuration? Just want to make sure > I'm understanding fully. That is what that AIC3660 SCSI bridge chip is doing. I don't know if the AHA2940U2W has this chip on board, sorry, but the AHA2930U2W has it and so I would expect it to do that job as this bridge does it on the P2B-S motherboard. But to be true, I haven't read any ``genuine Adaptec documentation'' promising that neither have I tried it yet. But as my collegue said, it is possible to connect devices to each connector (50 pin internal, 68 pin LVD internal, external ``high density'' connector) and to use them parallel. I don't know about termination, in the P2B-S based box all individual three SCSI chains have proper termination at the one end and the rest is done by the motherboard. Neither I have checked the cable specifications - I don't know if each SCSI chain can be seen as one individual SCSI chain with specification depending on it's type or if there is something special. As that 2930U2W was a bulk one, there was no documentation with it. Regards, Martin -- /| /| | /| / ,,You know, there's a lot of opportunities, / |/ | artin |/ |/ elk if you're knowing to take them, you know, there's a lot of opportunities, Freiberg/Saxony, Germany if there aren't you can make them, mw@sax.de / mw@theatre.sax.de make or break them!'' (Tennant/Lowe) To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message