On 2/20/07, David Brodbeck <[EMAIL PROTECTED]> 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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