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please please please PLEASE help!

From: Steve <steve(at)hotmail(dot)com>
To: pgsql-admin(at)postgresql(dot)org
Subject: please please please PLEASE help!
Date: 2004-07-23 06:10:55
Message-ID: cdqa6v$hdq$ (view raw, whole thread or download thread mbox)
Lists: pgsql-admin

I've asked this question a couple of times before on this forum but no 
one seems to be nice enough to point me to the right direction or help 
me out with any information, if possible. Please help me out with this 
because this is a very serious issue for me and I need to learn more 
about this. And here it is again:

I've been running postgres on my server for over a year now and the 
tables have become huge. I have 3 tables that have data over 10GB each 
and these tables are read very very frequently. In fact, heavy searches 
on these tables are expected every 2 to 3 minutes. This unfortunately 
gives a very poor response time to the end user and so I'm looking at 
other alternatives now.

Currently, the postgresql installation is on a single disk and so all 
the tables have their data read from a single disk. Searching on 
different tables by multiple users at the same time results in very slow 
searches, as it's mainly dependant on the spindle speed. I recently 
gained access to another server which has 3 SCSI disks. I know there is 
a way to mirror the tables across the three different disks but I'm not 
sure if it's as easy as symlinking the files (WAL files only?) across. 
Can anyone please tell me what to do here and how to harness the power 
of the three SCSI drives that I have. Which files in the data directory 
need to be moved? Is this safe? Can backups etc be easily done? Any 
information will be greatly appreciated. Thank you,



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