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Re: Clusters

From: Sean Chittenden <sean(at)chittenden(dot)org>
To: Andrew Sullivan <andrew(at)libertyrms(dot)info>,pgsql-performance(at)postgresql(dot)org
Subject: Re: Clusters
Date: 2002-10-28 21:18:46
Message-ID: 20021028211846.GM92719@perrin.int.nxad.com (view raw or flat)
Thread:
Lists: pgsql-performance
> > together behind an SLB? Assume that all systems have a qlogic
> > card, and are attached to a SAN, and that the SAN holds the
> > data. Can PostgreSQL be configured to read from the SAN? Does each
> > system have to initialize the DB?
> 
> You can't do this safely.  PostgreSQL wants to control its disk.
> Someone has said on the (?) -general list that he has modified the
> PostgreSQL code to do this, but it makes me nervous.

Didn't Tom say that it was possible if you had different WAL logs for
each instance?  ie, just share the data directory, but everything else
has to be on a per instance basis.  Check the archives, someone just
asked about this a week ago or so.  -sc

-- 
Sean Chittenden

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