Received: from localhost (wm.hub.org [200.46.204.128]) by postgresql.org (Postfix) with ESMTP id E44D19FAE4E for ; Wed, 22 Nov 2006 13:10:12 -0400 (AST) Received: from postgresql.org ([200.46.204.71]) by localhost (mx1.hub.org [200.46.204.128]) (amavisd-new, port 10024) with ESMTP id 25366-04 for ; Wed, 22 Nov 2006 17:09:53 +0000 (UTC) X-Greylist: from auto-whitelisted by SQLgrey- Received: from lists.commandprompt.com (host-130.commandprompt.net [207.173.203.130]) by postgresql.org (Postfix) with ESMTP id C2CF89F9F27 for ; Wed, 22 Nov 2006 13:09:52 -0400 (AST) Received: from [192.168.1.95] (or-67-76-146-141.sta.embarqhsd.net [67.76.146.141]) (authenticated bits=0) by lists.commandprompt.com (8.13.7/8.13.6) with ESMTP id kAMH9dqN018275 (version=TLSv1/SSLv3 cipher=RC4-MD5 bits=128 verify=NO); Wed, 22 Nov 2006 09:09:40 -0800 Subject: Re: availability of SATA vendors From: "Joshua D. Drake" To: Jeff Frost Cc: Bucky Jordan , Luke Lonergan , pgsql-performance@postgresql.org In-Reply-To: References: <78ED28FACE63744386D68D8A9D1CF5D420A080@MAIL.corp.lumeta.com> <1164214816.2868.18.camel@localhost.localdomain> Content-Type: text/plain Organization: Command Prompt, Inc. Date: Wed, 22 Nov 2006 09:09:50 -0800 Message-Id: <1164215390.2868.26.camel@localhost.localdomain> Mime-Version: 1.0 X-Mailer: Evolution 2.8.1 Content-Transfer-Encoding: 7bit X-Virus-Scanned: ClamAV version 0.88.5, clamav-milter version 0.88.5 on projects.commandprompt.com X-Virus-Status: Clean X-Greylist: Sender succeded SMTP AUTH authentication, not delayed by milter-greylist-1.6 (lists.commandprompt.com [192.168.2.159]); Wed, 22 Nov 2006 09:09:41 -0800 (PST) X-Virus-Scanned: Maia Mailguard 1.0.1 X-Archive-Number: 200611/192 X-Sequence-Number: 21962 On Wed, 2006-11-22 at 09:02 -0800, Jeff Frost wrote: > On Wed, 22 Nov 2006, Joshua D. Drake wrote: > > >> I could only find the 6 disk RAID5 numbers in the archives that were run with > >> bonnie++1.03. Have you run the RAID10 tests since? Did you settle on 6 disk > >> RAID5 or 2xRAID1 + 4XRAID10? > > > > Why not 6 drive raid 10? IIRC you need 4 to start RAID 10 but only pairs > > after that. > > A valid question. Does the caching raid controller negate the desire to > separate pg_xlog from PGDATA? There is a point where the seperate pg_xlog does not help with RAID 10. Where that point is, entirely depends on your database usage :) Sincerely, Joshua D. Drake > -- === The PostgreSQL Company: Command Prompt, Inc. === Sales/Support: +1.503.667.4564 || 24x7/Emergency: +1.800.492.2240 Providing the most comprehensive PostgreSQL solutions since 1997 http://www.commandprompt.com/ Donate to the PostgreSQL Project: http://www.postgresql.org/about/donate