From owner-freebsd-scsi Thu Mar 2 9:14:35 2000 Delivered-To: freebsd-scsi@freebsd.org Received: from feral.com (feral.com [192.67.166.1]) by hub.freebsd.org (Postfix) with ESMTP id 3A74137BB4E for ; Thu, 2 Mar 2000 09:14:31 -0800 (PST) (envelope-from mjacob@feral.com) Received: from beppo.feral.com (beppo [192.67.166.79]) by feral.com (8.9.3/8.9.3) with ESMTP id JAA28381; Thu, 2 Mar 2000 09:14:08 -0800 Date: Thu, 2 Mar 2000 09:14:04 -0800 (PST) From: Matthew Jacob Reply-To: mjacob@feral.com To: up@3.am Cc: scsi@FreeBSD.ORG Subject: Re: Can't see DLT4000 In-Reply-To: Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-freebsd-scsi@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.org Don't mix differential with single ended. It's an electrical thing- it's very bad to mix the two- you run the risk of damaging the SE components. On Thu, 2 Mar 2000 up@3.am wrote: > > I just upgraded our tape drive from a DDS-2 DAT to a Quantum DLT4000 and > can't seem to get the system to see the DLT, no matter what. If I switch > back to the DDS2 and reboot, mt sees it fine. A rundown: > > Both are External SCSI drives set to SCSI ID 4 > > used the same terminator and cable > > I've rebooted several times > > The SCSI host adapter is an on-board Adaptec AIC-7896 (Intel L440GX+) > using the second (B) SCSI bus. When I have the DDS-2 drive hooked up, the > server's drive light functions normally (blinks when accessed), when I > hook up the DLT, it just stays on. > > The only difference I can see is that the DLT is "differential" SCSI, > which, AFAIK, just allows it to work with a longer bus. Is there > something that has to be done to the host adapter to accomodate > differential devices? > > TIA, > > James Smallacombe PlantageNet, Inc. CEO and Janitor > up@3.am http://3.am > ========================================================================= > > > > To Unsubscribe: send mail to majordomo@FreeBSD.org > with "unsubscribe freebsd-scsi" in the body of the message > To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-scsi" in the body of the message