X-Original-To: pgsql-performance-postgresql.org@localhost.postgresql.org Received: from localhost (av.hub.org [200.46.204.144]) by postgresql.org (Postfix) with ESMTP id C0A079DC9E1 for ; Wed, 18 Jan 2006 14:21:30 -0400 (AST) Received: from postgresql.org ([200.46.204.71]) by localhost (av.hub.org [200.46.204.144]) (amavisd-new, port 10024) with ESMTP id 95886-08 for ; Wed, 18 Jan 2006 14:21:30 -0400 (AST) X-Greylist: from auto-whitelisted by SQLgrey- Received: from hosting.commandprompt.com (128.commandprompt.com [207.173.200.128]) by postgresql.org (Postfix) with ESMTP id 41BF99DC9BA for ; Wed, 18 Jan 2006 14:21:27 -0400 (AST) Received: from [192.168.1.55] (fc1smp [66.93.38.87]) (authenticated bits=0) by hosting.commandprompt.com (8.13.4/8.13.4) with ESMTP id k0IIC8Xw029995; Wed, 18 Jan 2006 10:12:08 -0800 Message-ID: <43CE87D1.6010904@commandprompt.com> Date: Wed, 18 Jan 2006 10:24:17 -0800 From: "Joshua D. Drake" Organization: Command Prompt, Inc. User-Agent: Thunderbird 1.5 (X11/20051025) MIME-Version: 1.0 To: Benjamin Arai CC: pgsql-performance@postgresql.org Subject: Re: 3WARE Card performance boost? References: <00ee01c61c5a$5db2c870$d7cc178a@uni> In-Reply-To: <00ee01c61c5a$5db2c870$d7cc178a@uni> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit X-Greylist: Sender succeded SMTP AUTH authentication, not delayed by milter-greylist-1.6 (hosting.commandprompt.com [192.168.1.101]); Wed, 18 Jan 2006 10:12:08 -0800 (PST) X-Virus-Scanned: by amavisd-new at hub.org X-Spam-Status: No, score=0.146 required=5 tests=[AWL=0.146] X-Spam-Score: 0.146 X-Spam-Level: X-Archive-Number: 200601/303 X-Sequence-Number: 16781 > Obviously, I have done this to improve write performance for the update > each week. My question is if I install a 3ware or similar card to > replace my current software RAID 1 configuration, am I going to see a > very large improvement? If so, what would be a ball park figure? Well that entirely depends on what level... 1. I would suggest LSI 150-6 not 3ware Why? Because 3ware does not make a midrange card that has a battery backed cache :). That is the only reason. 3ware makes good stuff. So anyway... LSI150-6 with Battery Backed cache option. Put 6 drives on it with a RAID 10 array, turn on write cache and you should have a hauling drive. Joshua D. Drake > > *Benjamin Arai* > barai@cs.ucr.edu > http://www.benjaminarai.com > -- The PostgreSQL Company - Command Prompt, Inc. 1.503.667.4564 PostgreSQL Replication, Consulting, Custom Development, 24x7 support Managed Services, Shared and Dedicated Hosting Co-Authors: plPHP, plPerlNG - http://www.commandprompt.com/