From owner-freebsd-questions Fri Jan 18 19:44:41 2002 Delivered-To: freebsd-questions@freebsd.org Received: from guru.mired.org (dsl-64-192-6-133.telocity.com [64.192.6.133]) by hub.freebsd.org (Postfix) with SMTP id DF53A37B445 for ; Fri, 18 Jan 2002 19:44:13 -0800 (PST) Received: (qmail 63711 invoked by uid 100); 19 Jan 2002 03:44:12 -0000 MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Message-ID: <15432.60299.624642.284053@guru.mired.org> Date: Fri, 18 Jan 2002 21:44:11 -0600 To: Balaji Cc: questions@freebsd.org Subject: Re: SCSI disk sharing In-Reply-To: <133297878@toto.iv> X-Mailer: VM 6.90 under 21.1 (patch 14) "Cuyahoga Valley" XEmacs Lucid X-face: "5Mnwy%?j>IIV\)A=):rjWL~NB2aH[}Yq8Z=u~vJ`"(,&SiLvbbz2W`;h9L,Yg`+vb1>RG% *h+%X^n0EZd>TM8_IB;a8F?(Fb"lw'IgCoyM.[Lg#r\ From: "Mike Meyer" X-Delivery-Agent: TMDA/0.44 (Python 2.2; freebsd-4.4-STABLE-i386) Sender: owner-freebsd-questions@FreeBSD.ORG Precedence: bulk List-ID: List-Archive: (Web Archive) List-Help: (List Instructions) List-Subscribe: List-Unsubscribe: X-Loop: FreeBSD.ORG Balaji types: > hello there, > I have two Symbios Logic 8100S adapter and I wish to share a ST5660N > SCSI disk between two machines using these adapters. The SCSI BIOS > doesn't load for these adapters. So we are not able to terminate the > connection through the external SCSI ports. > Please help me as to how this can be configured. > The disk is recognised as /dev/da0 device on the machine to whose > adapter I have connected the disk. But the other adapter does not > recognize it. This kind of hookup must have: 1) No terminators on the cables between the machines. Make sure the ST5660N isn't terminating things. 2) Both ends must be internally terminated. Either you have to have an internal cable with termination, or you have to set the board to terminate. 3) Everything on the chain must use a different SCSI ID. In particular, your two controllers have to have different IDs. Note that accessing the drive from both systems at the same time is liable to be hazardous to the health of your drive, unless you know what you are doing. http://www.mired.org/home/mwm/ Independent WWW/Perforce/FreeBSD/Unix consultant, email for more information. To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message