Adrian Reyer:
> Make sure you have cache ram on your raid controller and a battery
> backup unit installed. MySQL and Postgres like to write in sync. With
> BBU+cache the write is completed as soon as the controller has the data,
> no need to wait for disks. I doubt RAID0 would gain you much if any.

Using a SSD for the database storage should speed up the setup 
considerably. In my experience, they feel a bit like a in-memory database 
;-).

RAID0 for the spinning disks won't give much of a win, because database 
stuff is normally more bound to seek performance, than to io bandwidth, and 
only the latter will improve in that setup.

regards,
        Dietz
-- 
To be a bug is a dumb thing, a silly and a bump thing,
but to be a bug is something, and You're not a thing at all.

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