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From: guest@vu-vlsi.UUCP (visitors)
Newsgroups: comp.sys.ibm.pc
Subject: Re: Hard Drive Lifespans
Message-ID: <1159@vu-vlsi.UUCP>
Date: Sun, 11-Oct-87 14:25:53 EDT
Article-I.D.: vu-vlsi.1159
Posted: Sun Oct 11 14:25:53 1987
Date-Received: Tue, 13-Oct-87 00:36:24 EDT
References: <1623@ukecc.engr.uky.edu> <1766@rti.UUCP>
Reply-To: 164485913@excalibur.UUCP (Mark Schaffer)
Organization: Villanova Univ. EE Dept.
Lines: 32
Keywords: Bearings divot life wearout

In article <1766@rti.UUCP> bcw@rti.UUCP (Bruce Wright) writes:
>In article <1623@ukecc.engr.uky.edu>, dsrich@engr.uky.edu (Dave Richardson) writes:
>> 
>> Does the position of the drive (i.e. whether the PC is horizontal as on a
>> desktop, or vertical as in a stand on the floor) effect the lifespan of the
>> drive?
>
>An EE friend (and business associate) of mine was concerned about this when
>he was putting together an industrialized PC-compatible.  He 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.  He never found out if this was just
>because it hadn't been tested or if there was a real problem.
>[...]

I would think that the hard drive could be put in any orientation that did not
have the heads moving perpendicular to the horizon so that gravitational
effects on the positioning of the heads would be non-existent, otherwise, the
drives would have to be calibrated in the factory in this type of orientation.
If the heads move perpendicular to the face-plate, this would make sense.
Of course, this is just some idle speculation.

**Sigh**   just a thought...

 
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