I've got a bunch of mission-critical Postgres servers on Opterons, all with no less than 4GB RAM, running Linux + XFS, and most with LSI MegaRAID cards. We've never had a single system crash or failure on our postgres servers, and some of them are well-used and with uptimes in excess of a year.

It may be anecdotal, but LSI MegaRAID cards generally seem to work pretty well with Linux. The only problem I've ever seen was a BIOS problem between the LSI and the motherboard, which was solved by flashing the BIOS on the motherboard with the latest version (it was grossly out of date anyway).

J. Andrew Rogers

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