Date: Fri, 28 Nov 1997 10:53:24 -0800 From: David Greenman <dg@root.com> To: Cliff Addy <fbsdlist@federation.addy.com> Cc: Jeff Lynch <jeff@mercury.jorsm.com>, freebsd-isp@FreeBSD.ORG Subject: Re: Adaptec 2940 and FreeBSD 2.2.2-RELEASE Message-ID: <199711281853.KAA18707@implode.root.com> In-Reply-To: Your message of "Fri, 28 Nov 1997 11:08:35 EST." <Pine.BSF.3.95q.971128110550.8364A-100000@federation.addy.com>
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>On Fri, 28 Nov 1997, Jeff Lynch wrote: > >> The only problems I've had with 2940UWs on fbsd2.1.5-2.2.1 have occurred >> when we mix wide/narrow devices on the host adapter or attach a narrow >> (of course) external tape drive. Leaving the bus all wide or all narrow >> and all internal has never given us problems. > >The servers we have that keep blowing up have only a single internal DAT >on the narrow bus and a single internal UW HDD on the wide bus. It most >common for a tape error to lock up the machine, but they also lock up >with the same symptoms when no backups are being done. Hmmm...Do you have a narrow->wide converter than has termination for the upper (wide) data bits? I had a lot of problems here with using a narrow drive on a wide controller until Justin pointed out that the upper bits have to be terminated. I fixed the problem by putting a wide device at the end of the same cable that the narrow device was on (thus providing full wide termination). -DG David Greenman Core-team/Principal Architect, The FreeBSD Project
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