Received: from localhost (maia-2.hub.org [200.46.204.187]) by postgresql.org (Postfix) with ESMTP id 0E2089FB4BD for ; Sat, 3 Mar 2007 07:30:14 -0400 (AST) Received: from postgresql.org ([200.46.204.71]) by localhost (mx1.hub.org [200.46.204.187]) (amavisd-new, port 10024) with ESMTP id 31580-06 for ; Sat, 3 Mar 2007 07:30:05 -0400 (AST) X-Greylist: from auto-whitelisted by SQLgrey-1.7.4 Received: from olive.qinip.net (olive.qinip.net [62.100.30.40]) by postgresql.org (Postfix) with ESMTP id C52369FB3EE for ; Sat, 3 Mar 2007 07:30:09 -0400 (AST) Received: from [10.0.0.21] (h8441139206.dsl.speedlinq.nl [84.41.139.206]) by olive.qinip.net (Postfix) with ESMTP id DDC40180BE; Sat, 3 Mar 2007 12:30:02 +0100 (MET) Message-ID: <45E95C48.4000407@tweakers.net> Date: Sat, 03 Mar 2007 12:30:16 +0100 From: Arjen van der Meijden User-Agent: Thunderbird 2.0b2 (Windows/20070116) MIME-Version: 1.0 To: pgsql-performance@postgresql.org CC: Joe Uhl Subject: Re: Opinions on Raid References: <1172581920.28858.1176750095@webmail.messagingengine.com> <45E4C1EC.2070807@polimetrix.com> In-Reply-To: <45E4C1EC.2070807@polimetrix.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=0.035 tagged_above=0 required=5 tests=AWL, BAYES_50 X-Spam-Level: X-Archive-Number: 200703/79 X-Sequence-Number: 23484 On 28-2-2007 0:42 Geoff Tolley wrote: >> [2] How do people on this list monitor their hardware raid? Thus far we >> have used Dell and the only way to easily monitor disk status is to use >> their openmanage application. Do other controllers offer easier means >> of monitoring individual disks in a raid configuration? It seems one >> advantage software raid has is the ease of monitoring. Recent Dell raid-controllers are based on LSI chips, although they are not exactly the same as similar LSI-controllers (anymore). Our Dell Perc5/e and 5/i work with the MegaCLI-tool from LSI. But that tool has really limited documentation from LSI itself. Luckily Fujitsu-Siemens offers a nice PDF: http://manuals.fujitsu-siemens.com/serverbooks/content/manuals/english/mr-sas-sw-ug-en.pdf Besides that, there are several Dell linux resources popping up, including on their own site: http://linux.dell.com/ > Personally I use nagios with nrpe for most of the monitoring, and write > a little wrapper around the cli monitoring tool from the controller > manufacturer to grok whether it's in a good/degraded/bad state. If you have a MegaCLI-version, I'd like to see it, if possible? That would definitely save us some reinventing the wheel :-) > Dell PERC controllers I think are mostly just derivatives of Adaptec/LSI > controllers, so you might be able to get a more convenient monitoring > tool from one of them that might work. See if you can find your PERC > version in http://pciids.sourceforge.net/pci.ids, or if you're using > Linux then which hw raid module is loaded for it, to get an idea of > which place to start looking for that. The current ones are afaik all LSI-based. But at least the recent SAS controllers (5/i and 5/e) are. Best regards, Arjen