From owner-freebsd-alpha Sun Apr 11 15:30:44 1999 Delivered-To: freebsd-alpha@freebsd.org Received: from aries.fortean.com (aries.fortean.com [209.42.229.210]) by hub.freebsd.org (Postfix) with ESMTP id 8AF3B1522D for ; Sun, 11 Apr 1999 15:30:35 -0700 (PDT) (envelope-from walter@fortean.com) Received: from localhost (walter@localhost) by aries.fortean.com (8.8.8/8.8.8) with SMTP id QAA01825; Sun, 11 Apr 1999 16:39:31 -0400 (EDT) (envelope-from walter@fortean.com) X-Authentication-Warning: aries.fortean.com: walter owned process doing -bs Date: Sun, 11 Apr 1999 16:39:31 -0400 (EDT) From: "Bruce M. Walter" To: "Gooderum, Mark" Cc: freebsd-alpha@freebsd.org Subject: RE: FreeBSD on Alpha Multia ( In-Reply-To: <50C732FEDE87D211954300A024786203A6A8@archeron.good.com> Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-freebsd-alpha@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.org > I've been wondering if it's dodgy hardware due to Thermal Loading. That was my first thought. After wading through tons of Multia links, I ordered an 18 CFM cooling fan from McMaster Carr to replace the existing 6 CFM fan. This made no difference on the reboot front :( It could also mean my efforts were too late and my RAM was permanently impaired by heat damage. > At one point I got a series of ncr0 firmware errors similar to those > mentioned earlier, shut the system down and let it cool for a while and > those problems went away. Do you have an internal drive? The first thing I did was move my SCSI drive to an external case. > Subjectively the box seems to stay cooler in a horizontal mode than vertical > in the little plastic stand supplied. I think part of the problem is > vertical as the stand put's it, the P/S fan is blowing _against_ natural > convection accross the Alpha CPU's heat sink. I've heard the exact opposite... My fans were both pulling air upwards when the case was vertical. With heat's natural tendency to rise I would think vertical is a better orientation ;) (Note the power button is towards the top when mounted vertically) - Bruce ______________________ Bruce M. Walter, Principal NIXdesign Group Inc. 426 S. Dawson Street Raleigh NC 27601 USA 919.829.4901 Tel (ext 11) 919.829.4993 Fax http://www.nixdesign.com Visual communications | concept + code To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-alpha" in the body of the message