[funsec] Database design.
BlueBoar at thievco.com
Tue Jun 6 18:07:06 CDT 2006
>> And you think that's the MTBF you'll get under your use conditions, huh?
Really? OK, so here's the possibilities I see. Please pick one or tell
me what I missed:
-You know precisely what Maxtor's testing conditions are, and those
happen to exactly match the conditions under which you use your drive.
-Maxtor is actually being conservative, and their 1.2M hr claim reflects
typical field usage. Marketing claims be damned, they're going to tell
-You've done your own study on the 1.2M hr drives, and came up with the
>> (Are you're sure that's not the MTBF for drives that aren't powered on?)
> If you don't power a drive on, it never fails, so the mtbf is infinite.
Oh, I don't know. I think I could look at a drive that had never been
powered on, but rusted through after the first 50 years, and declare it
See, when they publish a MTBF number, I tend to assume that they did
things like tested with a constant temperature in a vibration-free
environment, extrapolated beyond what they should have with the sample
size and length of test, and then failed to publish the margin of error.
But then, I've been accused of being a pessimist.
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