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Date:      Sun, 21 May 2000 01:12:18 -0400 (EDT)
From:      Chuck Robey <chuckr@picnic.mat.net>
To:        Rick Hamell <hamellr@aracnet.com>
Cc:        FreeBSD-chat@FreeBSD.ORG
Subject:   Re: 18G disk drives
Message-ID:  <Pine.BSF.4.21.0005210103290.74239-100000@picnic.mat.net>
In-Reply-To: <Pine.LNX.4.21.0005202131010.7387-100000@shell1.aracnet.com>

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On Sat, 20 May 2000, Rick Hamell wrote:

> 
> > Well, according to pricewatch, now you can buy the IBM DPSS-318350 18.3G
> > 7200rpm drive (Ultra 160) for $375, and the only thing stopping me is that
> > I can't find anyone who's used it to tell me if it runs as cool as most
> > recent IBM drives, or if it's a hot puppy like the Seagate.
> > 
> > Anyone have any info regarding the DPSS-318350 and heat?
> 
> 	I've not ran that model, but I thought I'd point out that you can
> get some fairly good cooling systems that fit in your 5 1/4 bays. Place
> the hard drive right below (or if you opt for that model,) inside and
> it'll help keep such problems from happening. You'll also want to make
> sure you have a fan in the front of the case. $50 worth of fans will save
> you lots of heartbreak and trouble, especially with SCSI :)

The point is, the current 4G IBM drives I have are so cool they are nearly
at ambient, and make such cooling totally unneccesary.  I keep on having
to open the case on the ones that get fans, because of all the dust
accumulation.  I'm just not willing to use hot drives, I have this strong
suspicion that, cooling or not, they are not as reliable.

BTW, if you think maintaining cooling is as simple as placing an extra fan
in, well, it's not.  You have to very carefully consider air flow, and
your heat sources.  It's not enough just to push a lot of air.  If I was
doing it for a lot of PCs, for a company (and I had a number of probes to
make certain) then you can do a good job, but most of the fan placements
I've seen, even many of those done by big companies, are a joke, done on
the same level as putting in flashy displays on a stereo (it makes the
buyer feel good without improving performance).


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Chuck Robey            | Interests include C & Java programming, FreeBSD,
chuckr@picnic.mat.net  | electronics, communications, and signal processing.

New Year's Resolution:  I will not sphroxify gullible people into looking up
fictitious words in the dictionary.
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