You pay a price writes, but with write caching enabled on your (battery-backed, of course) RAID card and using gigabit, it's easy to get >100MB/s throughput. It's also easy to replicate different block devices over separate network links, if that becomes your bottleneck.

On May 18, 2007, at 6:14 PM, Alvaro Herrera wrote:

Ben wrote:
If you're just looking for a way to have high availability and you're ok being tied to linux, DRBD is a good way to go. It keeps things simple in that all changes are replicated, it won't say an fsync is finished until
it's finished on the remote host too,

Oh, so that's how it works. I assume performance must be, huh, not stellar?

--
Alvaro Herrera http:// www.CommandPrompt.com/
The PostgreSQL Company - Command Prompt, Inc.

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