Date: Wed, 27 Nov 1996 14:37:03 +0100 (MET) From: Greg Lehey <grog@lemis.de> To: msmith@atrad.adelaide.edu.au (Michael Smith) Cc: chat@FreeBSD.ORG (FreeBSD Chat) Subject: Re: SCSI A/V drives Message-ID: <199611271337.OAA02251@freebie.lemis.de> In-Reply-To: <199611270010.KAA04947@genesis.atrad.adelaide.edu.au> from Michael Smith at "Nov 27, 96 10:40:05 am"
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Michael Smith writes: > Terry Lambert stands accused of saying: >> >> Actually, the coefficient of radial expansion for various temperates >> could be calculated from knowledge of the materials inside the box to >> which you attach your electronics. >> >> This is something a manufacturer should already know. > > It makes for a pretty textbook problem, yes. In practice, it's not as > simple as you'd like to make out. There are any number of potential > heat sources, It's not just the heat source, it's the relative effect of the surroundings. You can't rely on all the drive to have the same temperature. Stack two or morea identical drives one above the other in a standard "tower" enclosure, and though each might have the same average temperature, the distribution is different for each drive. > and their location and effects on the geometry of the unit are best > determined by measuring the actual item that you're interested in. Agreed. Greghome | help
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