*BSD News Article 42178


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From: Thomas van Kuipers <tjwhkuip@cs.ruu.nl>
Subject: Re: List of recommended hardware components 
In-Reply-To: <3h3o9u$8oq@news-s01.ny.us.ibm.net> 
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Message-ID: <Pine.HPP.3.91.950206135640.3670K-100000@bredero.cs.ruu.nl>
Sender: usenet@cs.ruu.nl (Six O'Clock News)
Organization: Utrecht University, Dept. of Computer Science
References: <3g890k$cbl@ionews.io.org> <3gjhe1$ced@pentagon.io.com> <STEPHENS.95Feb1162921@sycamore.pprd.abbott.com> <3gs889$18@fido.asd.sgi.com> <D3HtB4.33G@bonkers.taronga.com> <3h3o9u$8oq@news-s01.ny.us.ibm.net> 
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Date: Mon, 6 Feb 1995 12:57:08 GMT
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On 5 Feb 1995, John Welter wrote:

> >Given that the Seagates that caught on fire were at least 2G drives, I
> >wouldn't jump to that conclusion...
> >
> >(not to mention the 1G drives I'm going through in our Sparcstations)
> 
> If you'd read the spec's on the large Seagate drives and do your homework to
> find out that you need more cooling,  and added a second fan, then you wouldn't
> be going through drives.  They >DO< die if they do not have ample cooling.  In all
> 20 of our machines using the 12450, they NEEDED a second fan.  This is in addition
> to big fans in the power supply's (PC Power and cooling twin power units), a 5.25"
> fan blowing into the expansion card area, and a little fan on the P54's heatsink.  
> These are also in LARGE cases, with a empty drive bay above and below the 
> Seagates.  I assume the 1gig drives are the same, as we are currently upgrading
> to the 4gig units, and they too, need lots of cooling.

This is due to very fast rotating: 7200 U/min .... normal drives uses 
3600->5400 U/min at most.....
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