From: Joshua Wood <josh@utopian.net>
To: 9fans@cse.psu.edu
Subject: Re: [9fans] ata drive capabilities
Date: Tue, 25 Dec 2007 23:44:32 -0800 [thread overview]
Message-ID: <FD04582B-2D24-4FA4-B005-A3BC4D059043@utopian.net> (raw)
> >From everything I've seen, SMART has zero correlation with real
> hardware issues -- confirmed by a discussion with someone at a big
> search company. SMART is dumb.
If it's everyone's favorite ``big search company'' in question, they
have an [only moderately depressing] paper:
http://209.85.163.132/papers/disk_failures.pdf
Turns out from their big sample that, nope, SMART isn't good at
predicting failure; nor are temperature or activity levels. Instead
it seems like almost entirely a manufacturing crapshoot.
SMART looks no smarter in CMU's study of the same topic, which nixes
age as a good failure predictor, too:
http://www.usenix.org/event/fast07/tech/schroeder/schroeder_html/
index.html
--
Josh
next reply other threads:[~2007-12-26 7:44 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-12-26 7:44 Joshua Wood [this message]
2007-12-26 13:18 ` roger peppe
2007-12-26 18:15 ` erik quanstrom
-- strict thread matches above, loose matches on Subject: below --
2007-12-27 9:01 Joshua Wood
2007-12-27 15:15 ` Brantley Coile
2007-12-27 6:22 Joshua Wood
2007-12-27 7:28 ` erik quanstrom
2007-12-26 16:22 Joshua Wood
2007-12-26 18:14 ` erik quanstrom
2007-12-25 21:40 Christian Kellermann
2007-12-25 21:48 ` Pietro Gagliardi
2007-12-25 23:59 ` erik quanstrom
2007-12-26 6:31 ` ron minnich
2007-12-26 13:10 ` erik quanstrom
2007-12-26 19:52 ` Christian Kellermann
2007-12-26 20:13 ` andrey mirtchovski
2007-12-27 18:12 ` Christian Kellermann
2007-12-26 23:58 ` Robert William Fuller
2007-12-27 2:34 ` erik quanstrom
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