Date: Fri, 1 Dec 1995 16:43:13 -0700 (MST) From: Don Yuniskis <dgy@rtd.com> To: freebsd-hackers@freefall.FreeBSD.org (FreeBSD hackers) Subject: Re: No Thumbs??? (lack of concensus) Message-ID: <199512012343.QAA14472@seagull.rtd.com>
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It seems that Julian Elischer said: > > > > Are these things comfortable in an external enclosure (e.g., two > > > > drives in a dual drive enclosure with a single fan)? Just how "hot" > > > > is "hot"? > > > > > > Hotter than that! :-) I wouldn't recommend it. One drive in a box > > > maybe. Two, well, maybe you could put a hot plate on top and cook > > > your breakfast in the morning.. :-) > > he's not kidding.. > I have a 3GB Hitachio drive here that's cooked itself > because it was put in a normal PC cabinet.. Ah, I'm not claiming to go down *that* road! This is a single, FH 5" external enclosure (PS on the *side*) with a single fan at the rear. > when it failed, I openned the cabinet and touched the drive > to see if it was mounted solidly.. Literally I burned myself > It didn't QUITE blister, but I had a red mark on my finger for four days.. > > since then I've started looking at this, and found several instances where > the drive was too hot to touch.. > > remember it's not the wattage, it's how fst you can DISIPATE that wattage. Granted. Given that I'm "holding the enclosure and Pd constant" and only allowing the *source* of the heat to vary (i.e. tape vs. disk), this is probably the best approximation I can make without having a real drive in the enclosure! Hence the reason I'm asking these questions! :> > a soldering Iron is often only 15 Watts, but it gets to, what, 300+ degrees F? Actually, more like 700F. > > Yikes! It seems that the drives tend to run 10 to 15W (typical). My > > tape drive is in the same case (single full height 5") and it doesn't > > seem to complain or get too hot -- in fact, the case barely gets warm! > > Am I missing something here??
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