Received: from makus.postgresql.org (makus.postgresql.org [98.129.198.125]) by mail.postgresql.org (Postfix) with ESMTP id 82C4A8D31F0 for ; Sun, 4 Mar 2012 15:45:58 -0400 (AST) Received: from li339-205.members.linode.com ([96.126.114.205] helo=squeakycode.net) by makus.postgresql.org with esmtp (Exim 4.72) (envelope-from ) id 1S4HNQ-0007Qr-HK for pgsql-performance@postgresql.org; Sun, 04 Mar 2012 19:45:57 +0000 Received: from [192.168.1.116] (50-83-220-125.client.mchsi.com [50.83.220.125]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) (Authenticated sender: andy) by squeakycode.net (Postfix) with ESMTPSA id 91E92168F7; Sun, 4 Mar 2012 14:45:39 -0500 (EST) Message-ID: <4F53C662.1020100@squeakycode.net> Date: Sun, 04 Mar 2012 13:45:38 -0600 From: Andy Colson User-Agent: Mozilla/5.0 (X11; Linux i686; rv:10.0) Gecko/20120131 Thunderbird/10.0 MIME-Version: 1.0 To: Rory Campbell-Lange CC: pgsql-performance@postgresql.org Subject: Re: Advice sought : new database server References: <20120304095838.GA3064@campbell-lange.net> In-Reply-To: <20120304095838.GA3064@campbell-lange.net> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit X-Pg-Spam-Score: -1.9 (-) X-Archive-Number: 201203/50 X-Sequence-Number: 46500 On 03/04/2012 03:58 AM, Rory Campbell-Lange wrote: > I'd be grateful for advice on specifying the new server > > providing about 230GB of usable storage, 150GB of which is on an LV > providing reconfigurable space for the databases which are served off an > XFS formatted volume. > Do you mean LVM? I've heard that LVM limits IO, so if you want full speed you might wanna drop LVM. (And XFS supports increasing fs size, and when are you ever really gonna want to decrease fs size?). -Andy