Date: Sun, 05 Dec 1999 14:46:20 -0800 From: "Ronald F. Guilmette" <rfg@monkeys.com> To: freebsd-hackers@FreeBSD.ORG Subject: Re: Strange SCSI sickness Message-ID: <22945.944433980@monkeys.com> In-Reply-To: Your message of Sun, 05 Dec 1999 16:15:51 -0500. <Pine.BSF.4.05.9912051604550.35433-100000@kronos.alcnet.com>
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In message <Pine.BSF.4.05.9912051604550.35433-100000@kronos.alcnet.com>, Kelly Yancey <kbyanc@posi.net> wrote: >> >> 3b) Examination of the drive(s) in question for any cooling or >> mounting deficiencies. Depending on the SCSI errors in question, >> I might even investigate firmware updates for the drive(s). >> > > I actually used to get these *exact* errors a couple of years ago on >various 2.x systems. At first, I had assumed a bug in the driver (the ahc >driver was noted as still having some bugs at the time, if I recall >correctly). The errors would rare (every month or so, but they would come >in batches). I kept upgrading, from 2.1.5, through 2.2.5 hoping that the >errors would go away. Now, my ignorance being point out, it turned out >that the errors were actually heat-induced. > I had 2 5-year old 7200RPM drives in each of the systems, that besides >being noisy, got pretty hot. Of course, they weren't hot when I mounted >them :), and I had mounted them right next to each other in the case. >It helped a little when I spaced the drives apart from each other. Then >I found these neat full-length expansion cards which have 2 fans mounted >on them. Got that situated to circulate additional air across the drives >and never had any problem since (those systems have been running for over >a year since without incident). Yowza. I found two web sites recently where a nice veriety of different types of useful cooling devices (mostly for PeeCee type systems) are available: http://www.3dcool.com/ and: http://www.icedmocha.com/ I bought two ``slot fans'' from www.icedmocha.com recently, and I think I'm sure now where one of those two fans is going. :-) To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message
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