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From: chris@yarra.oz.au (Chris Jankowski)
Newsgroups: sci.engr,comp.misc
Subject: MTBF definition
Keywords: reliability availability failure
Message-ID: <67286@yarra.oz.au>
Date: 5 Dec 90 00:54:52 GMT
Followup-To: sci.engr
Organization: Pyramid Technology Corp PL, Melb., Australia
Lines: 23


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.

      -m-------   Chris Jankowski - Senior Systems Engineer   chris@yarra.oz.au
    ---mmm-----   Pyramid Technology Corporation Pty. Ltd.  fax  +61 3 521 3799
  -----mmmmm---   1st Floor, 553 St. Kilda Road             tel. +61 3 525 1730
-------mmmmmmm-   Melbourne, Victoria, 3004       AUSTRALIA       (03) 521 3799

socialism, n. - a tortuous way from capitalism to capitalism - (a new Russian
                definition).


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