From: Arjen van der Meijden <acmmailing@tweakers.net>
To: pgsql-performance@postgresql.org
Cc: Joe Uhl <joeuhl@gmail.com>
Subject: Re: Opinions on Raid
Date: Sat, 03 Mar 2007 12:30:16 +0100
Message-ID: <45E95C48.4000407@tweakers.net> (raw)
In-Reply-To: <45E4C1EC.2070807@polimetrix.com>
References: <1172581920.28858.1176750095@webmail.messagingengine.com>
<45E4C1EC.2070807@polimetrix.com>
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
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To: pgsql-performance@postgresql.org
Cc: acmmailing@tweakers.net, joeuhl@gmail.com
Subject: Re: Opinions on Raid
In-Reply-To: <45E95C48.4000407@tweakers.net>
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