From: Arjen van der Meijden <acmmailing@tweakers.net>
To: jason@ohloh.net <jason@ohloh.net>
Cc: Ron <rjpeace@earthlink.net>
Cc: pgsql-performance@postgresql.org
Subject: Re: SCSI vs SATA
Date: Thu, 05 Apr 2007 18:29:42 +0200
Message-ID: <461523F6.70504@tweakers.net> (raw)
In-Reply-To: <3C1520FD-DE3B-4A16-A7BA-74489D4CC89D@ohloh.net>
References: <200704042027.l34KRMI03358@momjian.us>
<46140B49.3060205@commandprompt.com>
<46140F05.9090403@mochima.com>
<649E6F5F-13D0-4D2F-A842-722320FF8F3C@ohloh.net>
<E1HZPqm-0002lm-Qz@elasmtp-kukur.atl.sa.earthlink.net>
<3C1520FD-DE3B-4A16-A7BA-74489D4CC89D@ohloh.net>
On 5-4-2007 17:58 jason@ohloh.net wrote:
>
> On Apr 5, 2007, at 4:09 AM, Ron wrote:
>
>> BE VERY WARY OF USING AN ADAPTEC RAID CONTROLLER!
>
> Thanks - I received similar private emails with the same advice. I will
> change the controller to a LSI MegaRAID SAS 8408E -- any feedback on
> this one?
We have the dell-equivalent (PERC 5/e and PERC 5/i) in production and
have had no issues with it, it also performes very well (compared to a
ICP Vortex controller). The LSI has been benchmarked by my colleague and
he was pleased with the controller.
> I went w/ Fujitsu. Fortunately these servers are hosted in a very well
> ventilated area so i am not that concerned with heat issues.
We have 15 of the 36GB drives and they are doing great. According to
that same colleague, the Fujitsu drives are currently the best
performing drives. Although he hasn't had his hands on the new Savvio
15k rpm drives yet.
>> What 16bay 3U server are you using?
>
> supermicro sc836tq-r800
> http://www.supermicro.com/products/chassis/3U/836/SC836TQ-R800V.cfm
You could also look at this version of that chassis:
http://www.supermicro.com/products/chassis/3U/836/SC836E1-R800V.cfm
Afaik it sports a 28-port expander, which should (please confirm with
your vendor) allow you to connect all 16 drives to the 8-ports of your
controller. Which in turn allows your both sets of disks to be used with
your BBU-backed controller.
Best regards,
Arjen
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To: pgsql-performance@postgresql.org
Cc: acmmailing@tweakers.net, jason@ohloh.net, rjpeace@earthlink.net
Subject: Re: SCSI vs SATA
In-Reply-To: <461523F6.70504@tweakers.net>
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