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From: Chuck Simmons
Organization: You jest.
X-Mailer: Mozilla 4.61 [en] (X11; U; Linux 2.0.33 i586)
Subject: Re: Disk drive handling in assembly
References: <3D9CF7A9.BF4BB1C0@webaccess.net> <email@example.com>
Date: Fri, 04 Oct 2002 04:11:43 GMT
NNTP-Posting-Date: Thu, 03 Oct 2002 21:11:43 PDT
The little lost angel wrote:
> On Fri, 04 Oct 2002 02:06:54 GMT, Chuck Simmons
> >day. The motive for this question derives from a question about high
> >failure rate experienced by a particular company. I have already given
> IBM?? :D
No. Nobody at IBM ever asks me anything. That's probably wise of them.
> >Does the final product provide for appropriate cooling air for the head
> >disk assembly and the electronics board mounted to the head disk
> Could it be the environment the HDD are used in?
I was asked to consider this issue because I have 20 years experience in
the hard drive business. Since, at this point, the whole thing is a
favor for an old friend, I consulted another hard drive engineer with 30
years experience who I know. We independently concluded that the most
probable problem is handling and probably hard work surfaces or forcing
drives into mounts with tools. Both guarantee high failure rates at
least in our combined experience at several companies spanning a lot of
disk drive history. ESD is probably second to mechanical abuse as a
cause of high failure rates. I put environment at the bottom of the
list, in this case, because the statistics do not deviate with geography
(wide spread sites).
My questions are in top to bottom order of likelyhood of causing field
failures at a moderate but constant rate.
... The times have been,
That, when the brains were out,
the man would die. ... Macbeth
Chuck Simmons firstname.lastname@example.org
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