From mboxrd@z Thu Jan 1 00:00:00 1970 From: Nat Makarevitch Subject: Re: 2x6 or 3x4 raid10 arrays ? Date: Thu, 28 Feb 2008 22:36:22 +0000 (UTC) Message-ID: References: <1204195554.16924.16.camel@franck-gusty> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Return-path: Sender: linux-raid-owner@vger.kernel.org To: linux-raid@vger.kernel.org List-Id: linux-raid.ids Franck Routier axege.com> writes: > database (postgresql) server. AFAIK if the average size of an I/O operation as long as the corresponding variance are low... go for a single RAID10,f2 with a stripe size slightly superior to this average. This way you will have most requests mobilizing only a single spindle and all your spindles acting in parallel. If this average size varies upon tables one may create a RAID (with the adequate stripe size) per database partition. -- http://www.makarevitch.org/rant/raid/