Everyone here always says that RAID 5 isn't good for Postgres. We have an Apple Xserve RAID configured with RAID 5. We chose RAID 5 because Apple said their Xserve RAID was "optimized" for RAID 5. Not sure if we made the right decision though. They give an option for formatting as RAID 0+1. Is that the same as RAID 10 that everyone talks about? Or is it the reverse?

Thanks,

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On May 2, 2006, at 11:16 AM, Jim C. Nasby wrote:

On Wed, Apr 26, 2006 at 05:14:41PM +0930, Eric Lam wrote:
all dumpfiles total about 17Gb. It has been running for 50ish hrs and up
to about the fourth file (5-6 ish Gb) and this is on a raid 5 server.

RAID5 generally doesn't bode too well for performance; that could be
part of the issue.
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