Re: SAN performance mystery - Mailing list pgsql-performance

From Stephen Frost
Subject Re: SAN performance mystery
Date
Msg-id 20060619124153.GQ8588@kenobi.snowman.net
Whole thread Raw
In response to Re: SAN performance mystery  (Tim Allen <tim@proximity.com.au>)
Responses Re: SAN performance mystery
List pgsql-performance
* 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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