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Re: hddtemp value

From: Ralph Katz <ralph.katz(at)rcn.com>
Date: Mon Jun 25 2007 - 14:04:56 EDT

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 consistent pattern of higher failure rates for higher temperature drives or for those drives at higher utilization levels. 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 models 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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Received on Mon Jun 25 14:05:17 2007

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