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DATA directory on network attached storage

From: Jeff Frost <jeff(at)frostconsultingllc(dot)com>
To: Josh Berkus <josh(at)agliodbs(dot)com>
Cc: sfpug(at)postgresql(dot)org, pgsql-performance(at)postgresql(dot)org
Subject: DATA directory on network attached storage
Date: 2005-04-08 17:01:55
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Lists: pgsql-performancesfpug
We are currently considering the possibility of creating a warm standby 
machine utilizing heartbeat and a network attached storage device for the DATA 
directory.  The idea being that the warm standby machine has its postmaster 
stopped.  When heartbeat detects the death of the master server, the 
postmaster is started up on the warm standby using the shared DATA directory. 
Other than the obvious problems of both postmasters inadvertently attempting 
access at the same time, I'm curious to know if anyone has tried any similar 
setups and what the experiences have been.  Specifically is the performance of 
gigE good enough to allow postgres to perform under load with an NFS mounted 
DATA dir?  Are there other problems I haven't thought about?  Any input would 
be greatly appreciated.


Jeff Frost, Owner 	<jeff(at)frostconsultingllc(dot)com>
Frost Consulting, LLC
Phone: 650-780-7908	FAX: 650-649-1954

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