From: Robert L Mathews <lists@tigertech.com>
To: Linux RAID <linux-raid@vger.kernel.org>
Subject: Re: Use RAID-6!
Date: Tue, 16 Apr 2013 12:52:18 -0700 [thread overview]
Message-ID: <516DABF2.5050409@tigertech.com> (raw)
In-Reply-To: <15345091.8.1366130671716.JavaMail.root@zimbra>
On 4/16/13 9:44 AM, Roy Sigurd Karlsbakk wrote:
> So, if you can afford another drive, please use RAID-6. Do *not* trust RAID-5 with something like 8 drives.
Yep. This has been true for many years, too:
http://www.miracleas.com/BAARF/
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).
If (no, scratch that, "when") something goes horribly wrong, I can mount
any of the disks as normal, non-RAID volumes. All I need is one disk to
work. (If none of the disks are working, the RAID level is irrelevant...
;-)
To me, that level of confidence is worth sacrificing quite a bit of
performance and capacity. It has saved my bacon at least once.
--
Robert L Mathews, Tiger Technologies, http://www.tigertech.net/
next prev parent reply other threads:[~2013-04-16 19:52 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 [this message]
2013-04-16 20:05 ` Carsten Aulbert
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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