From: Carsten Aulbert <Carsten.Aulbert@aei.mpg.de>
To: Robert L Mathews <lists@tigertech.com>
Cc: Linux RAID <linux-raid@vger.kernel.org>
Subject: Re: Use RAID-6!
Date: Tue, 16 Apr 2013 22:05:53 +0200 [thread overview]
Message-ID: <516DAF21.5040409@aei.mpg.de> (raw)
In-Reply-To: <516DABF2.5050409@tigertech.com>
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Hi
On 04/16/2013 09:52 PM, Robert L Mathews wrote:
> I personally don't even trust RAID 6. All our servers use three-disk
> RAID 1 setups, with disks from at least two different manufacturers to
> prevent against firmware bricking (although this is becoming more and
> more difficult as the industry consolidates).
The problem I find with RAID1 is that it won't protect you against
silent corruptions (same as RAID5). What do you do if you do a through
check and both drives claim a data block is valid and intact, but data
differs? Do you trust disk1 or disk2?
In that respect I think RAID1 is a step into the wrong direction :(
Cheers
Carsten
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next prev parent reply other threads:[~2013-04-16 20:05 UTC|newest]
Thread overview: 28+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-04-16 16:44 Use RAID-6! Roy Sigurd Karlsbakk
2013-04-16 17:09 ` Mikael Abrahamsson
2013-04-16 17:25 ` Roy Sigurd Karlsbakk
2013-04-16 20:01 ` David Brown
2013-04-17 7:56 ` Mikael Abrahamsson
2013-04-17 9:26 ` David Brown
2013-04-16 19:52 ` Robert L Mathews
2013-04-16 20:05 ` Carsten Aulbert [this message]
2013-04-16 20:19 ` Roman Mamedov
2013-04-16 22:44 ` Robert L Mathews
2013-04-17 0:20 ` Ben Bucksch
2013-04-17 1:35 ` Adam Goryachev
2013-04-17 4:27 ` Robert L Mathews
2013-04-17 4:45 ` Adam Goryachev
2013-04-17 6:06 ` Stan Hoeppner
2013-04-17 11:13 ` Ben Bucksch
2013-04-17 11:32 ` Adam Goryachev
2013-04-17 11:51 ` Ben Bucksch
2013-04-17 17:50 ` Roy Sigurd Karlsbakk
2013-04-17 3:32 ` Robert L Mathews
2013-04-17 4:20 ` Roman Mamedov
2013-04-17 5:22 ` Robert L Mathews
2013-04-17 17:27 ` Roy Sigurd Karlsbakk
2013-04-16 23:42 ` md dropping disks too early (was: Use RAID-6!) Ben Bucksch
2013-04-17 8:00 ` Mikael Abrahamsson
2013-04-17 10:57 ` md dropping disks too early Ben Bucksch
2013-04-17 15:03 ` Keith Keller
2013-04-17 18:09 ` Roy Sigurd Karlsbakk
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