The article seems to dismiss RAID5 a little too quickly.  For many
application types, using fast striped mirrors for the index space and
RAID5 for the data can offer quite good performance (provided a
sufficient number of spindles for the RAID5 - 5 or 6 disks or more).  In
fact, random read (ie most webapps) performance of RAID5 isn't
necessarily worse than that of RAID10, and can in fact be better in some
circumstances.  And, using the cheaper RAID5 might allow you to do that
separation between index and data in the first place.

Just thought I'd mention it,

-----Original Message-----
[mailto:[EMAIL PROTECTED] On Behalf Of Frank Wiles
Sent: Wednesday, June 22, 2005 10:52 AM
To: pgsql-performance@postgresql.org
Subject: [PERFORM] Performance Tuning Article

  Hi Everyone, 

  I've put together a short article and posted it online regarding
  performance tuning PostgreSQL in general.  I believe it helps to bring
  together the info in a easy to digest manner. I would appreciate any
  feedback, comments, and especially any technical corrections.  

  The article can be found here: 



   Frank Wiles <[EMAIL PROTECTED]>

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