The first part of the article can be found in

The site seems to be down. I was looking forward to reading it. :(

The first and most important step for RAID performance with PostgreSQL is to get a card with onboard battery back-up and enable the write cache for the card. You do not want to enable the write cache *without* battery back-up because of the risk of data corruption after a power failure.

Here is a small example of the performance difference with write cache:


Daniel Ceregatti - Programmer
Omnis Network, LLC

A little suffering is good for the soul.
                -- Kirk, "The Corbomite Maneuver", stardate 1514.0

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