Received: from localhost (unknown [200.46.204.184]) by postgresql.org (Postfix) with ESMTP id 0126A9F9B5C for ; Sat, 8 Sep 2007 13:21:43 -0300 (ADT) Received: from postgresql.org ([200.46.204.71]) by localhost (mx1.hub.org [200.46.204.184]) (amavisd-maia, port 10024) with ESMTP id 16261-08 for ; Sat, 8 Sep 2007 13:21:38 -0300 (ADT) X-Greylist: from auto-whitelisted by SQLgrey-1.7.5 Received: from lists.commandprompt.com (host-254.commandprompt.net [207.173.203.254]) by postgresql.org (Postfix) with ESMTP id D441B9F9B53 for ; Sat, 8 Sep 2007 13:21:38 -0300 (ADT) Received: from [192.168.1.2] (or-69-34-217-90.sta.embarqhsd.net [69.34.217.90]) (authenticated bits=0) by lists.commandprompt.com (8.13.7/8.13.6) with ESMTP id l88GFm5J014584 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=NO); Sat, 8 Sep 2007 09:15:48 -0700 Message-ID: <46E2CAAF.50205@commandprompt.com> Date: Sat, 08 Sep 2007 09:15:43 -0700 From: "Joshua D. Drake" User-Agent: Thunderbird 1.5.0.13 (X11/20070824) MIME-Version: 1.0 To: Gregory Stark CC: Simon Riggs , Bernd Helmle , mfatticcioni@mbigroup.it, pgsql-performance@postgresql.org Subject: Re: DRBD and Postgres: how to improve the perfomance? References: <2C070D1C3970467FF64F6B6A@imhotep.credativ.de> <1189232904.4281.19.camel@ebony.site> <87k5r1zd52.fsf@oxford.xeocode.com> In-Reply-To: <87k5r1zd52.fsf@oxford.xeocode.com> X-Enigmail-Version: 0.94.2.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit X-Virus-Scanned: ClamAV 0.91.1/4194/Fri Sep 7 21:33:29 2007 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]); Sat, 08 Sep 2007 09:15:58 -0700 (PDT) X-Virus-Scanned: Maia Mailguard 1.0.1 X-Archive-Number: 200709/144 X-Sequence-Number: 26689 -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Gregory Stark wrote: > "Simon Riggs" writes: > >> You're right, but the distinction is a small one. What are the chances >> of losing two independent servers within a few milliseconds of each >> other? > > If they're on the same power bus? That chance is minuscule or at least should be. Of course we are assuming some level of conditioned power that is independent of the power bus, e.g; a UPS. Joshua D. Drake - -- === The PostgreSQL Company: Command Prompt, Inc. === Sales/Support: +1.503.667.4564 24x7/Emergency: +1.800.492.2240 PostgreSQL solutions since 1997 http://www.commandprompt.com/ UNIQUE NOT NULL Donate to the PostgreSQL Project: http://www.postgresql.org/about/donate PostgreSQL Replication: http://www.commandprompt.com/products/ -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.6 (GNU/Linux) Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org iD8DBQFG4sqvATb/zqfZUUQRAq/qAKCkkFX/hTddRJriMGMYhjy04REwvgCfUoY5 pzcyvahVvsaAL8qlkJVtbX0= =nzIH -----END PGP SIGNATURE-----