Received: from maia.hub.org (maia-3.hub.org [200.46.204.243]) by mail.postgresql.org (Postfix) with ESMTP id CE250B5DBE7 for ; Tue, 21 Jun 2011 04:55:58 -0300 (ADT) Received: from mail.postgresql.org ([200.46.204.86]) by maia.hub.org (mx1.hub.org [200.46.204.243]) (amavisd-maia, port 10024) with ESMTP id 83460-10 for ; Tue, 21 Jun 2011 07:55:52 +0000 (UTC) X-Greylist: domain auto-whitelisted by SQLgrey-1.7.6 Received: from mail-ey0-f174.google.com (mail-ey0-f174.google.com [209.85.215.174]) by mail.postgresql.org (Postfix) with ESMTP id 35B08B5DBE0 for ; Tue, 21 Jun 2011 04:55:52 -0300 (ADT) Received: by eyx24 with SMTP id 24so768369eyx.19 for ; Tue, 21 Jun 2011 00:55:51 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=domainkey-signature:message-id:date:from:user-agent:mime-version:to :cc:subject:references:in-reply-to:content-type :content-transfer-encoding; bh=xnxutbDdcLuUt/HfX6aLG22EU33t8WeXOla3bB59MTU=; b=naEOAjC8c1/2AL+6BSP8aR23qhC8IomvLsEQFPeKDZdJ41l1y/RbFQQoJF+vkTfqBQ oO2hG0/AcMrXL+Twx0iqpRdwasz5Tnr/I3k4BNSVuH/GL1DJ3TMLHjTQH/tTQamsih3f XDtVnAE9bnDvXPP4jTaTmMgwUqCzQIz7OcMZ4= DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=message-id:date:from:user-agent:mime-version:to:cc:subject :references:in-reply-to:content-type:content-transfer-encoding; b=B1fMXNdNYBu67aHHnoVbSR/sa65MRGBGV/BtzjJkgfofI2GnMzqwKiOquCc42hAfeP oHpt9AFCuPQfUfcGMej0OtLULYnLAbC4+2bvxepVnBAYEFaXtMhpLdYgvQGuwDXcj/ZQ p+gbRXE1eFt3scpnSwWhwr/2oLAOzsWCBPNOQ= Received: by 10.14.2.24 with SMTP id 24mr959128eee.132.1308642951547; Tue, 21 Jun 2011 00:55:51 -0700 (PDT) Received: from [192.168.73.63] (5357DA75.cm-6-8d.dynamic.ziggo.nl [83.87.218.117]) by mx.google.com with ESMTPS id z1sm5205767eeb.20.2011.06.21.00.55.50 (version=TLSv1/SSLv3 cipher=OTHER); Tue, 21 Jun 2011 00:55:50 -0700 (PDT) Message-ID: <4E004E74.5020209@gmail.com> Date: Tue, 21 Jun 2011 09:55:32 +0200 From: Yeb Havinga User-Agent: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-GB; rv:1.9.2.17) Gecko/20110414 Lightning/1.0b2 Thunderbird/3.1.10 MIME-Version: 1.0 To: Greg Smith CC: pgsql-performance@postgresql.org Subject: Re: Contemplating SSD Hardware RAID References: <4E0015F2.9060504@drivefaster.net> <4E003B44.9090005@2ndQuadrant.com> <4E004D96.7010308@gmail.com> In-Reply-To: <4E004D96.7010308@gmail.com> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit X-Virus-Scanned: Maia Mailguard 1.0.1 X-Spam-Status: No, hits=-1.898 tagged_above=-10 required=5 tests=BAYES_00=-1.9, FREEMAIL_FROM=0.001, RFC_ABUSE_POST=0.001 X-Spam-Level: X-Archive-Number: 201106/195 X-Sequence-Number: 44128 On 2011-06-21 09:51, Yeb Havinga wrote: > On 2011-06-21 08:33, Greg Smith wrote: >> On 06/20/2011 11:54 PM, Dan Harris wrote: >> >>> I'm exploring the combination of an Areca 1880ix-12 controller with >>> 6x OCZ Vertex 3 V3LT-25SAT3 2.5" 240GB SATA III drives in RAID-10. >>> Has anyone tried this combination? What nasty surprise am I >>> overlooking here? I forgot to mention that with an SSD it's important to watch the remaining lifetime. These values can be read with smartctl. When putting the disk behind a hardware raid controller, you might not be able to read them from the OS, and the hardware RAID firmware might be to old to not know about the SSD lifetime indicator or not even show it. -- Yeb Havinga http://www.mgrid.net/ Mastering Medical Data