From: Stephen Frost <sfrost@snowman.net>
To: Tim Allen <tim@proximity.com.au>
Cc: Scott Marlowe <smarlowe@g2switchworks.com>
Cc: pgsql-performance@postgresql.org
Subject: Re: SAN performance mystery
Date: Mon, 19 Jun 2006 08:41:54 -0400
Message-ID: <20060619124153.GQ8588@kenobi.snowman.net> (raw)
In-Reply-To: <449677EB.50609@proximity.com.au>
References: <4491D61B.9040507@proximity.com.au>
<1150408614.26538.95.camel@state.g2switchworks.com>
<449677EB.50609@proximity.com.au>
* Tim Allen (tim@proximity.com.au) wrote:
> The conclusion I'm drawing here is that this SAN does not perform at all
> well, and is not a good database platform. It's sounding from replies
> from other people that this might be a general property of SAN's, or at
> least the ones that are not stratospherically priced.
I'd have to agree with you about the specific SAN/setup you're working
with there. I certainly disagree that it's a general property of SAN's
though. We've got a DS4300 with FC controllers and drives, hosts are
generally dual-controller load-balanced and it works quite decently.
Indeed, the EMC SANs are generally the high-priced ones too, so not
really sure what to tell you about the poor performance you're seeing
out of it. Your IT folks and/or your EMC rep. should be able to resolve
that, really...
Enjoy,
Stephen
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To: pgsql-performance@postgresql.org
Cc: sfrost@snowman.net, tim@proximity.com.au, smarlowe@g2switchworks.com
Subject: Re: SAN performance mystery
In-Reply-To: <20060619124153.GQ8588@kenobi.snowman.net>
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