Mailinglist Archive: opensuse (3109 mails)

["Greg Freemyer" <greg.freemyer@xxxxxxxxx>]

On 2/20/07, David Brodbeck <gull@xxxxxxx> wrote:
> Stevens wrote:
> > Auto manufacturers try to predict how their interiors and their paints will
> > last, too, but until both are subjected to the Texas sun they are only
> > guessing. The North has salt that kills cars; in the South it is the sun.
> > Only when they obtain empirical data can they be sure and that data takes
> > a long time to gather. The same goes for optical media manufacturers. Any
> > longevity rating is a SWAG, at best, which is the reason for my cynical
> > view.
> >
>
> Sure.  As anyone who's ever had a couple of hard disks fail can attest,
> MTBF numbers are mostly fiction.

I don't know about that, it is amazing how often disk drives fail
shortly after the warranty expires.

Actually, the Google paper on this is very interesting.
http://216.239.37.132/papers/disk_failures.pdf

To grossly simplify, commodity disk drives fail at a rate of roughly
10% per year starting in the 3rd year, independent of activity,
temperature, etc.

Greg
--
Greg Freemyer
The Norcross Group
Forensics for the 21st Century
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