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From: dgary@ecsvax.UUCP (D Gary Grady)
Newsgroups: comp.sys.ibm.pc
Subject: Re: Hard Drive Lifespans
Message-ID: <3980@ecsvax.UUCP>
Date: Mon, 5-Oct-87 17:15:54 EDT
Article-I.D.: ecsvax.3980
Posted: Mon Oct  5 17:15:54 1987
Date-Received: Thu, 8-Oct-87 05:43:21 EDT
References: <1623@ukecc.engr.uky.edu> <1766@rti.UUCP>
Reply-To: dgary@ecsvax.UUCP (D Gary Grady)
Organization: Datalytics, Inc.
Lines: 18
Keywords: Bearings divot life wearout gravity
Summary: mounting hard drive on end lets gravity pull on head assembly

In article <1766@rti.UUCP> bcw@rti.UUCP (Bruce Wright) writes:
>An EE friend ... found, somewhat
>to his surprise, that just about all of the possible positions in which the
>drive was at various 90-degree rotations were approved EXCEPT those with the
>face plate facing directly UP and DOWN.
>This was for a Seagate 225 ...

I believe the reason for this is that the head positioning mechanism is
designed to work without gravity pulling at the heads in either
direction.  Imagine what it would take to make the drive work
horizontally AND vertically.  Keep drives mounted flat or on the side,
not faceplate up or down.  (Reminds me of my favorite street sign:  Do
Not Park Vertical.)
-- 
D Gary Grady
(919) 286-4296
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