[Beowulf] Are disk MTBF ratings at all useful?

Andrew Holway andrew.holway at gmail.com
Sat Apr 20 15:08:48 PDT 2013


Did anyone post this yet? I thinking this is one of the definitive
works on disk failure.

http://static.googleusercontent.com/external_content/untrusted_dlcp/research.google.com/en//archive/disk_failures.pdf

On 19 April 2013 17:56, Joe Landman <landman at scalableinformatics.com> wrote:
> On 4/19/2013 11:47 AM, mathog wrote:
>>> My overall impression is that, when buying drives, the single piece of
>>> manufacturer provided data that
>>> best correlates with the actual expected life of the drive is the
>>> length of the warranty.  Even that is little
>>> protection against a bad batch though.
>
> Use AFR and warranty, ignore everything else.  MTBF does not correlate
> at all against AFR, and AFR is an objective measure.
>
>>>
>>> Thanks,
>>>
>>> David Mathog
>>> mathog at caltech.edu
>>> Manager, Sequence Analysis Facility, Biology Division, Caltech
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