Received: from maia.hub.org (maia-2.hub.org [200.46.204.251]) by mail.postgresql.org (Postfix) with ESMTP id D61C3B5DC71 for ; Fri, 15 Jul 2011 15:56:08 -0300 (ADT) Received: from mail.postgresql.org ([200.46.204.86]) by maia.hub.org (mx1.hub.org [200.46.204.251]) (amavisd-maia, port 10024) with ESMTP id 50787-02 for ; Fri, 15 Jul 2011 18:56:03 +0000 (UTC) X-Greylist: delayed 00:06:39.715846 by SQLgrey-1.7.6 Received: from mailout-de.gmx.net (mailout-de.gmx.net [213.165.64.22]) by mail.postgresql.org (Postfix) with SMTP id CA735B5DC6C for ; Fri, 15 Jul 2011 15:56:01 -0300 (ADT) Received: (qmail invoked by alias); 15 Jul 2011 18:49:20 -0000 Received: from unknown (EHLO [192.150.187.53]) [192.150.187.53] by mail.gmx.net (mp002) with SMTP; 15 Jul 2011 20:49:20 +0200 X-Authenticated: #3088237 X-Provags-ID: V01U2FsdGVkX1+Md7IITyuM/zuO9Po9/KD/kd6XaWW3nnTPn1ob0x AVa9hw13+EH1hb Message-ID: <4E208BB0.4010804@gmx.net> Date: Fri, 15 Jul 2011 11:49:20 -0700 From: "chris r." User-Agent: Mozilla/5.0 (Windows; U; Windows NT 6.1; de; rv:1.9.2.18) Gecko/20110616 Lightning/1.0b2 Thunderbird/3.1.11 MIME-Version: 1.0 To: pgsql-performance@postgresql.org Subject: Re: Hardware advice for scalable warehouse db References: <4E1FE7ED.90909@2ndquadrant.com> In-Reply-To: <4E1FE7ED.90909@2ndquadrant.com> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit X-Y-GMX-Trusted: 0 X-Virus-Scanned: Maia Mailguard 1.0.1 X-Spam-Status: No, hits=-1.888 tagged_above=-10 required=5 tests=BAYES_00=-1.9, FREEMAIL_FROM=0.001, RCVD_IN_DNSWL_NONE=-0.0001, RP_MATCHES_RCVD=0.001, T_TO_NO_BRKTS_FREEMAIL=0.01 X-Spam-Level: X-Archive-Number: 201107/163 X-Sequence-Number: 44375 Hi list, Thanks a lot for your very helpful feedback! > I've tested MD1000, MD1200, and MD1220 arrays before, and always gotten > seriously good performance relative to the dollars spent Great hint, but I'm afraid that's too expensive for us. But it's a great way to scale over the years, I'll keep that in mind. I had a look at other server vendors who offer 4U servers with slots for 16 disks for 4k in total (w/o disks), maybe that's an even cheaper/better solution for us. If you had the choice between 16 x 2TB SATA vs. a server with some SSDs for WAL/indexes and a SAN (with SATA disk) for data, what would you choose performance-wise? Again, thanks so much for your help. Best, Chris