Re: hddtemp value
On 06/25/2007 01:02 PM, David Brodbeck wrote:
> Conventional wisdom is that higher temperatures shorten disk life, but
> IIRC Google did a study on their own drives and didn't find any
> significant correlation.
Correct.
Failure Trends in a Large Disk Drive Population
Appears in the Proceedings of the 5th USENIX Conference on File and
Storage Technologies (FAST'07), February 2007
http://labs.google.com/papers/disk_failures.pdf
>From the Conclusion:
One of our key findings has been the lack of a con-
sistent pattern of higher failure rates for higher temper-
ature drives or for those drives at higher utilization lev-
els. Such correlations have been repeatedly highlighted
by previous studies, but we are unable to confirm them
by observing our population.
>From the Abstract:
Our analysis identifies several parameters from the drive's
self monitoring facility (SMART) that correlate highly with
failures. Despite this high correlation, we conclude that mod-
els based on SMART parameters alone are unlikely to be useful
for predicting individual drive failures. Surprisingly, we found
that temperature and activity levels were much less correlated
with drive failures than previously reported.
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