From: "Steve Fairbairn" <steve@fairbairn-family.com>
To: 'Norman Elton' <normelton@gmail.com>
Cc: linux-raid@vger.kernel.org
Subject: RE: How many drives are bad?
Date: Tue, 19 Feb 2008 19:44:45 -0000 [thread overview]
Message-ID: <1bbd01c8732f$e115f970$0603a8c0@meanmachine> (raw)
In-Reply-To: <6b3a7f010802191125q3905d1abw2372ed5c7ab1eaf0@mail.gmail.com>
>
> The box presents 48 drives, split across 6 SATA controllers.
> So disks sda-sdh are on one controller, etc. In our
> configuration, I run a RAID5 MD array for each controller,
> then run LVM on top of these to form one large VolGroup.
>
I might be missing something here, and I realise you'd lose 8 drives to
redundancy rather than 6, but wouldn't it have been better to have 8
arrays of 6 drives, each array using a single drive from each
controller? That way a single controller failure (assuming no other HD
failures) wouldn't actually take any array down? I do realise that 2
controller failures at the same time would lose everything.
Steve.
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next prev parent reply other threads:[~2008-02-19 19:44 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-02-19 17:23 How many drives are bad? Norman Elton
2008-02-19 17:31 ` Justin Piszcz
2008-02-19 18:24 ` Norman Elton
2008-02-19 18:33 ` Justin Piszcz
2008-02-19 18:38 ` Norman Elton
2008-02-19 19:13 ` Justin Piszcz
2008-02-19 19:25 ` Norman Elton
2008-02-19 19:44 ` Steve Fairbairn [this message]
2008-02-20 0:22 ` Guy Watkins
2008-02-20 7:21 ` Peter Grandi
2008-02-21 18:12 ` Norman Elton
2008-02-21 20:54 ` pg_mh, Peter Grandi
2008-02-21 21:45 ` Peter Rabbitson
2008-02-21 4:28 ` Neil Brown
-- strict thread matches above, loose matches on Subject: below --
2008-02-20 4:03 Guy Watkins
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