From: Merlin Moncure <mmoncure@gmail.com>
To: Arjen van der Meijden <acmmailing@tweakers.net>
Cc: Joe Uhl <joeuhl@gmail.com>
Cc: pgsql-performance@postgresql.org
Subject: Re: Dell Hardware Recommendations
Date: Fri, 10 Aug 2007 16:05:51 +0530
Message-ID: <b42b73150708100335x765469bdmc9c7135a2df0d81a@mail.gmail.com> (raw)
In-Reply-To: <46BB934D.7090503@tweakers.net>
References: <46BB6F3D.6090608@gmail.com>
<b42b73150708091450t448e3fa0nc778ab87d639603@mail.gmail.com>
<46BB934D.7090503@tweakers.net>
On 8/10/07, Arjen van der Meijden <acmmailing@tweakers.net> wrote:
> On 9-8-2007 23:50 Merlin Moncure wrote:
> > Where the extra controller especially pays off is if you have to
> > expand to a second tray. It's easy to add trays but installing
> > controllers on a production server is scary.
>
> For connectivity-sake that's not a necessity. You can either connect
> (two?) extra MD1000's to your first MD1000 or you can use the second
> external SAS-port on your controller. Obviously it depends on the
> controller whether its good enough to just add the disks to it, rather
> than adding another controller for the second tray. Whether the perc5/e
> is good enough for that, I don't know, we've only equipped ours with a
> single MD1000 holding 15x 15k rpm drives, but in our benchmarks it
> scaled pretty well going from a few to all 14 disks (+1 hotspare).
completely correct....I was suggesting this on performance
terms...I've never done it with the Perc/5, but have done it with some
active/active SANs and it works really well.
merlin
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To: pgsql-performance@postgresql.org
Cc: mmoncure@gmail.com, acmmailing@tweakers.net, joeuhl@gmail.com
Subject: Re: Dell Hardware Recommendations
In-Reply-To: <b42b73150708100335x765469bdmc9c7135a2df0d81a@mail.gmail.com>
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