Mailinglist Archive: opensuse (3107 mails)
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[opensuse] Re: About Backing Up
- From: Joachim Schrod <jschrod@xxxxxxx>
- Date: Wed, 21 Feb 2007 12:10:34 +0100
- Message-id: <erh9bb$8ed$1@xxxxxxxxxxxxx>
David Brodbeck wrote:
Well, I can attest that you don't seem to know much about statistics. ;-) ;-)
At one of my customers, 10,000s of disks are in use at the servers. There MTBF numbers are reliable indicators of how much disks one has to buy in advance to exchange the defect ones.
Of course, being a statstical measure, it doesn't tell at all which disk will fail next, so it can only be used for purchasing decisions and not for precautionary actions. See also the recent Google report on that topic.
Joachim
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Joachim Schrod Email: jschrod@xxxxxxx
Roedermark, Germany
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Sure. As anyone who's ever had a couple of hard disks fail can attest,
MTBF numbers are mostly fiction.
Well, I can attest that you don't seem to know much about statistics. ;-) ;-)
At one of my customers, 10,000s of disks are in use at the servers. There MTBF numbers are reliable indicators of how much disks one has to buy in advance to exchange the defect ones.
Of course, being a statstical measure, it doesn't tell at all which disk will fail next, so it can only be used for purchasing decisions and not for precautionary actions. See also the recent Google report on that topic.
Joachim
--
=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
Joachim Schrod Email: jschrod@xxxxxxx
Roedermark, Germany
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To unsubscribe, e-mail: opensuse+unsubscribe@xxxxxxxxxxxx
For additional commands, e-mail: opensuse+help@xxxxxxxxxxxx
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