linux-kernel - Re: limits on raid

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Message-ID: <46770091.2080109@redhat.com>
Date:	Mon, 18 Jun 2007 16:00:49 -0600
From:	Brendan Conoboy <blc@...hat.com>
To:	david@...g.hm
CC:	Wakko Warner <wakko@...mx.eu.org>,
	Lennart Sorensen <lsorense@...lub.uwaterloo.ca>,
	Neil Brown <neilb@...e.de>, linux-kernel@...r.kernel.org,
	linux-raid@...r.kernel.org
Subject: Re: limits on raid

david@...g.hm wrote:
> yes, I'm useing promise drive shelves, I have them configured to export 
> the 15 drives as 15 LUNs on a single ID.

Well, that would account for it.  Your bus is very, very saturated.  If 
all your drives are active, you can't get more than ~7MB/s per disk 
under perfect conditions.

-- 
Brendan Conoboy / Red Hat, Inc. / blc@...hat.com
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