From owner-freebsd-hackers Tue Feb 15 9:49: 5 2000 Delivered-To: freebsd-hackers@freebsd.org Received: from mail.enteract.com (mail.enteract.com [207.229.143.33]) by builder.freebsd.org (Postfix) with ESMTP id 7167B4F31 for ; Tue, 15 Feb 2000 09:39:02 -0800 (PST) Received: from shell-1.enteract.com (dscheidt@shell-1.enteract.com [207.229.143.40]) by mail.enteract.com (8.9.3/8.9.3) with SMTP id LAA18313; Tue, 15 Feb 2000 11:39:24 -0600 (CST) (envelope-from dscheidt@enteract.com) Date: Tue, 15 Feb 2000 11:39:24 -0600 (CST) From: David Scheidt To: Banu Ozden Cc: freebsd-hackers@freebsd.org Subject: Re: scsi target mode In-Reply-To: <200002141719.MAA18497@aura.research.bell-labs.com> Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-freebsd-hackers@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG On Mon, 14 Feb 2000, Banu Ozden wrote: > here's a diagram depicting what we want to do. we're trying to setup > a PC (PC2 below) with an adaptec controller to act as an emulated disk. > PC 1 will access the disks on PC 2. I don't do this on FreeBSD, but I do a lot of this under HP/UX. Our configurations look like this: --------------- --------- ---------------- | Host Adaptor0| | DISKS | | Host Adaptor1 | | SCSI ID=7 |======| |=======| SCSI ID=6 | | | | | | | --------------- --------- ----------------- As for termination, remember that SCSI is a bus. It goes from here to there, and has a terminator at each end. We no longer use the on card termination. HP make a nifty pass-through terminator (part number C2980A, for F/W/D busses only) that allows one controller be disconnected without breaking bus termination. Very handy if you need to do work on one system without disturbing the application running on the other. I advise against putting a SCSI controller in the middle, unless you use a Y cable. Regards, David Scheidt To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message