04-21-2008, 05:09 AM
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| Junior Member | | Join Date: Sep 2009
Posts: 0
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 Re: Recommended hard drive temperature
On 20 Apr 2008 22:03:24 GMT, Arno Wagner put finger
to keyboard and composed:
>Previously Franc Zabkar wrote:
>> On Sun, 20 Apr 2008 14:16:28 +0200, lars put finger
>> to keyboard and composed:
>
>>>In short, time well spend reading.
>>>http://www.pdl.cmu.edu/PDL-FTP/Failu...ast07_abs.html
>
>> This document appears to be a statistical analysis of HD failures. It
>> doesn't attempt to delve into the technical reasons for failure. The
>> only time it discusses temperature, or SMART, is in reference to the
>> Google article in my OP.
>
>> Google's experience suggests to me that temperatures below about 35C
>> result in greater failure rates, which is contrary to normal
>> expectations. However, Arno appears to be saying that the lower temps
>> may be a consequence of failure rather than a cause.
>
>Exactly. It is possible, but the paper does not give us enough
>data to determine whether it is the case. Also it runns contrary
>to all known reliability characteristics of semiconductors,
>other electronics components and mechnanics.
>
>Arno
What about fluid dynamics? Maybe there is an optimal temperature for
the platter lubricant and/or air bearing.
I found this interesting Samsung patent whose inventors claim that
"flying height drops significantly in humid conditions" and that this
can be remedied "by increasing the temperature of the air flowing
between a slider's air bearing surface and the rotating disk surface
it accesses".
Method and Apparatus Reducing Flying Height Drop in a Hard Disk Drive
Under Humid Conditions:
http://tinyurl.com/4s5brl
http://www.freshpatents.com/Method-a...0070297085.php
- Franc Zabkar
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