From owner-freebsd-hackers Sat Dec 2 08:20:49 1995 Return-Path: owner-hackers Received: (from root@localhost) by freefall.freebsd.org (8.6.12/8.6.6) id IAA08030 for hackers-outgoing; Sat, 2 Dec 1995 08:20:49 -0800 Received: from seagull.rtd.com (root@seagull.rtd.com [198.102.68.2]) by freefall.freebsd.org (8.6.12/8.6.6) with ESMTP id IAA08019 for ; Sat, 2 Dec 1995 08:20:46 -0800 Received: (from dgy@localhost) by seagull.rtd.com (8.6.12/8.6.9.1) id JAA05853; Sat, 2 Dec 1995 09:19:08 -0700 From: Don Yuniskis Message-Id: <199512021619.JAA05853@seagull.rtd.com> Subject: Re: No Thumbs??? (lack of concensus) To: smp@csn.net (Steve Passe) Date: Sat, 2 Dec 1995 09:19:07 -0700 (MST) Cc: freebsd-hackers@freefall.FreeBSD.org (FreeBSD hackers) In-Reply-To: <199512020340.UAA00866@clem.systemsix.com> from "Steve Passe" at Dec 1, 95 08:40:39 pm X-Mailer: ELM [version 2.4 PL24] MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Content-Length: 1972 Sender: owner-hackers@FreeBSD.ORG Precedence: bulk It seems that Steve Passe said: > > So, how are people mounting 1991's (etc.)? In file server cases?? > > Seems like a bit of overkill... > > I use single height enclosures with the front panel removed (ie the blockout single *half* height or single *full* height? > used for things like tape drives). In its place I put a foam filter to catch > dust. This allows airflow directly across the top of the drive. I also Hmmm... that's a good idea (tho' not quite as visually appealing! :>) > get a GOOD fan from someplace like Digikey. Panasonic makes a line of > ball-beaing fans with much higher rated air-flows that the ones typically > found in disk cabinents. The oem fans also usually die in short order, which And *another* good idea! I'll have to examine the fans on these cabinets a bit more closely... > will fry a disk quite quickly. You do pay for it with increased fan noise! Yeah, well, my office isn't very quiet as it is so a few more dB of fan noise won't matter... > I am running a MC3243W (4GB 7200rpm) in one of these and the temp of the > outlet > air is little warmer than that from the older MC2217s I have (in same type > cabinents). The top of the cabinet is no warmer than room temp. I was looking to put *two* 3243's in a fullheight external enclosure. Or, a single 1991. But, same problems (I imagine) would plague each... How warm does the 3243 case get (use *top* side of finger to test). > Check out: > > http://www.freebsd.org/~faulkner/multimedia/HomeAuto/Therm.html Cute. I designed a similar product for remote equipment monitoring. It would pick up the phone and call voice/data to report temperature errors, etc. I imagine you had monitoring the disk temperature as your intended application? :> Maybe just put a warning light and then hardwire a circuit to (unceremoniously) remove power from the drive at hi-temp. > I might actually get back to finish this soon. I've got a *list* of _those_! :>