Received: from malur.postgresql.org ([217.196.149.56]) by arkaria.postgresql.org with esmtp (Exim 4.72) (envelope-from ) id 1UfLEx-0000pT-Cf for pgsql-performance@arkaria.postgresql.org; Thu, 23 May 2013 02:26:51 +0000 Received: from localhost ([127.0.0.1] helo=postgresql.org) by malur.postgresql.org with smtp (Exim 4.72) (envelope-from ) id 1UfLEw-0005B0-TS for pgsql-performance@arkaria.postgresql.org; Thu, 23 May 2013 02:26:50 +0000 Received: from makus.postgresql.org ([2001:4800:7903:4::125]) by malur.postgresql.org with esmtp (Exim 4.72) (envelope-from ) id 1UfLEm-0005Al-7W for pgsql-performance@postgresql.org; Thu, 23 May 2013 02:26:40 +0000 Received: from [2404:130:0:10::40:2] (helo=mail.catalyst.net.nz) by makus.postgresql.org with esmtp (Exim 4.80) (envelope-from ) id 1UfLEf-0002c1-4i for pgsql-performance@postgresql.org; Thu, 23 May 2013 02:26:39 +0000 Received: from localhost (localhost [127.0.0.1]) by mail.catalyst.net.nz (Postfix) with ESMTP id 920586786A; Thu, 23 May 2013 14:26:29 +1200 (NZST) X-Virus-Scanned: Debian amavisd-new at catalyst.net.nz Received: from mail.catalyst.net.nz ([127.0.0.1]) by localhost (bertrand.catalyst.net.nz [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id A+thviptCUap; Thu, 23 May 2013 14:26:28 +1200 (NZST) Received: from [IPv6:2404:130:0:1000:222:4dff:fe88:a586] (unknown [IPv6:2404:130:0:1000:222:4dff:fe88:a586]) (Authenticated sender: mark.kirkwood) by mail.catalyst.net.nz (Postfix) with ESMTPSA id 7290A3309F; Thu, 23 May 2013 14:26:28 +1200 (NZST) Message-ID: <519D7E54.4000806@catalyst.net.nz> Date: Thu, 23 May 2013 14:26:28 +1200 From: Mark Kirkwood User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:17.0) Gecko/20130510 Thunderbird/17.0.6 MIME-Version: 1.0 To: Greg Smith CC: "Joshua D. Drake" , Merlin Moncure , sthomas@optionshouse.com, Tomas Vondra , pgsql-performance@postgresql.org Subject: Re: Reliability with RAID 10 SSD and Streaming Replication References: <51957499.6050905@fuzzy.cz> <519991EB.8010208@2ndQuadrant.com> <519A8E29.60702@fuzzy.cz> <519C0EFD.9080002@2ndQuadrant.com> <519CF8CC.1030204@optionshouse.com> <519D0921.9080807@2ndQuadrant.com> <519D174A.4050703@commandprompt.com> <519D1CD6.2080607@2ndQuadrant.com> <519D2562.2060604@2ndQuadrant.com> <519D49DC.7060406@commandprompt.com> <519D6A84.7050707@commandprompt.com> <519D71AD.4080606@catalyst.net.nz> <519D7930.2040308@catalyst.net.nz> <519D7D60.1060804@2ndQuadrant.com> In-Reply-To: <519D7D60.1060804@2ndQuadrant.com> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit X-Host-Lookup-Failed: Reverse DNS lookup failed for 2404:130:0:10::40:2 (failed) X-Pg-Spam-Score: 1.6 (+) List-Archive: List-Help: List-ID: List-Owner: List-Post: List-Subscribe: List-Unsubscribe: X-Mailing-List: pgsql-performance Precedence: bulk Sender: pgsql-performance-owner@postgresql.org On 23/05/13 14:22, Greg Smith wrote: > On 5/22/13 10:04 PM, Mark Kirkwood wrote: >> Make that quite a few capacitors (top right corner): >> http://regmedia.co.uk/2013/05/07/m500_4.jpg > > There are some more shots and descriptions of the internals in the > excellent review at > http://techreport.com/review/24666/crucial-m500-ssd-reviewed > > That also highlights the big problem with this drive that's kept me > from buying one so far: > > "Unlike rivals Intel and Samsung, Crucial doesn't provide utility > software with a built-in health indicator. The M500's payload of SMART > attributes doesn't contain any references to flash wear or bytes > written, either. Several of the SMART attributes are labeled > "Vendor-specific," but you'll need to guess what they track and read > the associated values using third-party software." > > That's a serious problem for most business use of this sort of drive. > Agreed - I was thinking the same thing! Cheers Mark -- Sent via pgsql-performance mailing list (pgsql-performance@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-performance