From: Miles Fidelman <mfidelman@meetinghouse.net>
Cc: "linux-raid@vger.kernel.org" <linux-raid@vger.kernel.org>
Subject: Re: 3TB drives failure rate
Date: Sun, 28 Oct 2012 17:45:56 -0400 [thread overview]
Message-ID: <508DA794.9030106@meetinghouse.net> (raw)
In-Reply-To: <20121029031851.42a5e1e9@natsu>
Roman Mamedov wrote:
> I do not think there is a state in modern HDDs that there would be a
> sector which consistently takes 30-120 seconds to read. Those are
> either unreadable at all, or readable after a delay -- and then
> already remapped by the HDD into the reserved zone, so the delay is
> not there the next time.
Umm... yes. This is a common near-failure mode with WD disks, as I
learned the hard way when I discovered that I had a server that had been
built with desktop drives rather than enterprise drives. Took quite
some time to figure out why my server was slowing WAY down. I still kind
of wonder why md doesn't consider exceptionally long read times as a
reason to drop a drive from a RAID array.
Miles Fidelman
--
In theory, there is no difference between theory and practice.
In practice, there is. .... Yogi Berra
next prev parent reply other threads:[~2012-10-28 21:45 UTC|newest]
Thread overview: 46+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-10-28 12:15 3TB drives failure rate Rainer Fügenstein
2012-10-28 12:19 ` Mathias Burén
2012-10-28 12:49 ` John Robinson
2012-10-28 12:54 ` Michael Tokarev
2012-10-28 16:47 ` Ed W
2012-10-28 17:05 ` Joe Landman
2012-10-28 22:12 ` joystick
2012-10-28 22:24 ` Miles Fidelman
2012-10-28 23:59 ` joystick
2012-10-29 0:09 ` Miles Fidelman
2012-10-29 4:29 ` Roman Mamedov
2012-10-29 7:54 ` David Brown
2012-10-29 13:02 ` Phil Turmel
2012-10-30 23:54 ` 3TB drives failure rate (summary) Rainer Fügenstein
2012-10-31 12:35 ` Phil Turmel
2012-11-01 15:13 ` Miles Fidelman
2012-11-01 15:24 ` John Robinson
2012-11-01 15:39 ` Miles Fidelman
2012-11-01 16:05 ` John Robinson
2012-11-01 16:25 ` Miles Fidelman
2013-02-05 17:43 ` Adam Goryachev
2013-02-05 18:08 ` Roy Sigurd Karlsbakk
2013-02-05 20:34 ` Wolfgang Denk
2012-10-29 13:26 ` 3TB drives failure rate Miles Fidelman
2012-10-28 19:50 ` Chris Murphy
2012-10-28 19:59 ` Roman Mamedov
2012-10-28 20:10 ` Chris Murphy
2012-10-28 20:16 ` Roman Mamedov
2012-10-28 20:34 ` Chris Murphy
2012-10-28 20:49 ` Roman Mamedov
2012-10-28 20:59 ` Chris Murphy
2012-10-28 21:07 ` Miles Fidelman
2012-10-28 20:50 ` Chris Murphy
2012-10-28 21:07 ` Chris Murphy
2012-10-28 21:18 ` Roman Mamedov
2012-10-28 21:24 ` Mikael Abrahamsson
2012-10-28 21:45 ` Miles Fidelman [this message]
2012-10-28 22:35 ` Chris Murphy
2012-10-28 21:51 ` Chris Murphy
2012-10-28 21:59 ` joystick
2012-10-28 22:10 ` Phil Turmel
2012-10-29 0:12 ` joystick
2012-10-29 0:21 ` Phil Turmel
2012-10-29 0:27 ` Chris Murphy
2012-10-28 21:21 ` Mikael Abrahamsson
2012-10-28 23:51 ` Peter Kieser
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