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From: Brad Campbell <lists2009@fnarfbargle.com>
To: Stan Hoeppner <stan@hardwarefreak.com>
Cc: Brad Campbell <lists2009@fnarfbargle.com>, linux-raid@vger.kernel.org
Subject: Re: HBA Adaptor advice
Date: Mon, 23 May 2011 07:44:50 +0800	[thread overview]
Message-ID: <4DD99FF2.2030609@fnarfbargle.com> (raw)
In-Reply-To: <4DD9633E.5000101@hardwarefreak.com>

On 23/05/11 03:25, Stan Hoeppner wrote:
>
> And that backup array may fail you when you need it most:  during a
> restore.  Search the XFS archives for the horrific tale at University of
> California Santa Cruz.  The SA lost ~7TB of doctoral student research
> data due to multiple WD20EARS drives in his primary storage arrays *and*
> his D2D backup array dying in quick succession.  IIRC multiple grad
> students were forced to attend another semester to redo their
> experiments and field work to recreate the lost data, so they could then
> submit their theses.

So I "googled" that thread, and after I picked my way past all the top rating hits which appear to 
be you telling people to google that thread I found the real problem.

He used WD commodity drives on a "hardware" RAID enclosure that needed TLER. The RAID-5 kicked out 4 
drives in a short period of time, so he power cycled it and re-initialised the array and it came up 
fine, but blank (as it would as he re-initialised it).

Sorry Stan, that's not a failure of the drives. He lost the data due to limitations in his RAID 
configuration and bad management.



  parent reply	other threads:[~2011-05-22 23:44 UTC|newest]

Thread overview: 60+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2011-05-19 12:26 HBA Adaptor advice Ed W
2011-05-19 12:36 ` Roman Mamedov
2011-05-19 12:43   ` Mathias Burén
2011-05-19 14:06 ` Michael Sallaway
2011-05-19 19:10 ` Thomas Harold
2011-05-19 21:12   ` Rudy Zijlstra
2011-05-19 21:07 ` Brad Campbell
2011-05-20 20:58   ` Tobias McNulty
2011-05-20 21:23     ` Brad Campbell
2011-05-20  2:08 ` Andy Smith
2011-05-20  5:30   ` Stan Hoeppner
2011-05-21  9:52     ` Ed W
2011-05-20  7:33   ` Ed W
2011-05-20 10:21     ` Stan Hoeppner
2011-05-21 11:17       ` Ed W
2011-05-21 11:29         ` Rudy Zijlstra
2011-05-21 11:54           ` Ed W
2011-05-21 17:37             ` Leslie Rhorer
2011-05-22  9:41             ` Stan Hoeppner
2011-05-22 10:03               ` Rudy Zijlstra
2011-05-23  9:32                 ` Ed W
2011-05-21 17:05           ` Leslie Rhorer
2011-05-22  9:04         ` Stan Hoeppner
2011-05-22 10:09           ` Brad Campbell
2011-05-22 19:25             ` Stan Hoeppner
2011-05-22 20:57               ` Tobias McNulty
2011-05-22 21:13                 ` Johannes Truschnigg
2011-05-23  9:48                   ` Ed W
2011-05-23 10:44                     ` John Robinson
2011-05-22 23:19               ` Brad Campbell
2011-05-23  4:09                 ` Roman Mamedov
2011-05-23  5:54                   ` Brad Campbell
2011-05-23  6:08                     ` Roman Mamedov
2011-05-23 10:42                     ` Stan Hoeppner
2011-05-23 11:35                       ` David Brown
2011-05-23  6:54                 ` Stan Hoeppner
2011-05-23  7:23                   ` Brad Campbell
2011-05-22 23:44               ` Brad Campbell [this message]
2011-05-23  0:07                 ` Brad Campbell
2011-05-23  5:30                   ` Stefan /*St0fF*/ Hübner
2011-05-23 10:18                     ` Ed W
2011-05-23  9:58                 ` Stan Hoeppner
2011-05-23 10:33                   ` Ed W
2011-05-23 11:21                     ` Stan Hoeppner
2011-05-20 12:18     ` Joe Landman
2011-05-20 12:34       ` Roman Mamedov
2011-05-20 12:36         ` Mathias Burén
2011-05-20 12:48         ` Joe Landman
2011-05-20 13:21       ` Ed W
2011-05-20 14:23         ` Joe Landman
2011-05-20 20:01       ` Andy Smith
2011-05-20 20:12         ` Stan Hoeppner
2011-05-20 20:24         ` Drew
2011-05-20 20:58           ` Stan Hoeppner
     [not found]             ` <4DD7A100.2010807@wildgooses.com>
2011-05-22  8:13               ` Stan Hoeppner
2011-05-23  2:11 Jim Schatzman
2011-05-23  3:39 ` Tobias McNulty
2011-05-23 10:42   ` Ed W
2011-05-23 11:14 HBA Adaptor Advice Ed W
2011-05-23 11:55 ` Joe Landman

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