From mboxrd@z Thu Jan 1 00:00:00 1970 From: Brendan Conoboy Subject: Re: 2x6 or 3x4 raid10 arrays ? Date: Thu, 28 Feb 2008 09:54:03 -0700 Message-ID: <47C6E72B.6060402@redhat.com> References: <1204195554.16924.16.camel@franck-gusty> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <1204195554.16924.16.camel@franck-gusty> Sender: linux-raid-owner@vger.kernel.org To: Franck Routier Cc: linux-raid@vger.kernel.org List-Id: linux-raid.ids Franck Routier wrote: > I am under the impression that I will get better results with requests > spread over 3 less effective arrays rather than two slightly more effive > one. Depends on your workload. If you use a larger chunk size, regardless of raid layout, you can try to get each db transaction to only hit one spindle. Seek time being a limiting factor, this may scale better when you have dozens of simultaneous requests. -- Brendan Conoboy / Red Hat, Inc. / blc@redhat.com