[comp.misc] MTBF definition

chris@yarra.oz.au (Chris Jankowski) (12/05/90)

Hi,

Can somebody tell me what is the exact definition of MTBF?

And how can I calculate availability of a system as a % of uptime per year
knowing its MTBF? And what is availability anyway?

And how can I calculate MTBF of a system built of components of known MTBF
ratings?

Short and long answers, pointers to literature etc. will all be much
appreciated.

I'll summarize to the newsgroup if enough answers received by email.

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