From mboxrd@z Thu Jan  1 00:00:00 1970
From: Richard Scobie <richard@sauce.co.nz>
Subject: Re: Hard drive lifetime: wear from spinning up or rebooting vs running
Date: Mon, 06 Feb 2006 17:35:52 +1300
Message-ID: <43E6D228.2070804@sauce.co.nz>
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David Liontooth wrote:

> Temperature obviously matters -- a linear approximation might look like
> this,
> 
>      Lifetime = 60 - 12 [(t-40)/2.5]
> 
> where 60 is the average maximum lifetime, achieved at 40 degrees C and
> below, and lifetime decreases by a year for every 2.5 degree rise in
> temperature.  Does anyone have an actual formula?

This paper from Hitachi may be of some use for their drives:

http://www.hgst.com/hdd/technolo/drivetemp/drivetemp.htm

Regards,

Richard