From: hansbkk@gmail.com
To: Roman Mamedov <rm@romanrm.ru>
Cc: linux-raid@vger.kernel.org
Subject: Re: Network-based RAID6
Date: Thu, 31 Mar 2011 14:59:45 +0700 [thread overview]
Message-ID: <BANLkTikRH77LFxn6BEYezOsHbk5B1KzzHw@mail.gmail.com> (raw)
In-Reply-To: <20110331111613.06079a0a@natsu>
On Thu, Mar 31, 2011 at 12:16 PM, Roman Mamedov <rm@romanrm.ru> wrote:
> On Wed, 30 Mar 2011 23:56:26 -0500
> I thought DRBD presents just a regular kernel-level block device in /dev, and
> seeing how one can create mdraid out of just any kind of block device,
> including those provided by AoE, iSCSI, LVM, dmcrypt or even 'loop', are you
> really sure this matters here?
The only advantage of RAID5/6 over mirroring is cost savings,
certainly not greater fault tolerance taking rebuilding times into
account - if you're planning to set up separate whole servers for each
component of your redundancy strategy, it seems odd to me you're
trying to saving a few bucks on hard drives.
DRBD is a well-regarded solution for this application, but it is
oriented toward mirroring whole filesystems (usually those of
mission-critical servers) that may themselves already be protected
locally with RAID. I would advise you follow their standard
recommendations at first, don't get too "creative" if you're actually
looking for fault-tolerance rather than just experimenting around.
All that said, if you're looking for a fun experiment and go ahead,
please do document your results and report back here!
prev parent reply other threads:[~2011-03-31 7:59 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-03-30 7:11 Network-based RAID6 Roman Mamedov
2011-03-30 7:20 ` CoolCold
2011-03-30 8:49 ` Roman Mamedov
2011-03-30 13:35 ` Stan Hoeppner
2011-03-30 14:24 ` Roberto Spadim
2011-03-30 14:43 ` Miles Fidelman
2011-03-30 14:58 ` Roberto Spadim
2011-03-30 17:50 ` Roman Mamedov
2011-03-30 18:17 ` Roberto Spadim
2011-03-31 4:56 ` Stan Hoeppner
2011-03-31 5:16 ` Roman Mamedov
2011-03-31 5:35 ` Stan Hoeppner
2011-03-31 7:59 ` hansbkk [this message]
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