On Wed, 2009-02-25 at 09:21 +0900, Jordan Tomkinson wrote:
>
> On Wed, Feb 25, 2009 at 12:05 AM, Aidan Van Dyk <aidan@highrise.ca>
> wrote:
> * Greg Smith <gsmith@gregsmith.com> [090201 00:00]:
>
> > Shouldn't someone have ranted about RAID-5 by this point in
> the thread?
>
>
> What? Sorry, I wasn't paying attention...
>
> You mean someone's actually still using RAID-5?
>
> ;-)
>
> What exactly is wrong with RAID5 and what should we have gone with?
RAID5 outside of RAID 0 is the worst possible RAID level to run with a
database. (of the commonly used raid level's that is).
It is very, very slow on random writes which is what databases do.
Switch to RAID 10.
Sincerely,
Joshua D. Drkae
>
>
--
PostgreSQL - XMPP: jdrake@jabber.postgresql.org
Consulting, Development, Support, Training
503-667-4564 - http://www.commandprompt.com/
The PostgreSQL Company, serving since 1997