RE: ext3 journal on software raid (was Re: PROBLEM: Kernel 2.6.10 crashing repeatedly and hard)

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Back to MTBF please.....

I agree that 1M hours MTBF is very bogus.  I don't really know how they
compute MTBF.  But I would like to see them compute the MTBF of a birthday
candle.

A birthday candle lasts about 2 minutes (as a guess).  I think they would
light 1000 candles at the same time.  Then monitor them until the first one
fails, say at 2 minutes.  I think the MTBF would then be computed as 2000
minutes MTBF!  But we can be sure that by 2.5 minutes, at least 90% of them
would have failed.

Guy

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