Stephen Frost wrote: > * Alexander Staubo (alex@xxxxxxxxxxxxxxx) wrote: >> What formula did you use to get to that number? Is there a generic >> way on Linux to turn off (controller-based?) write caching? > > Just a side-note, but if you've got a pretty good expectation that you > won't be without power for 24 consecutive hours ever you can get a > controller with a battery-backed write cache (some will do better than > 24 hours too). For the performance concerned... :) No to mention if you are *that* concerned you could buy a generator for 500 bucks that will keep the machine alive if you absolutely have to. There is nothing wrong with write back cache as long as you have the infrastructure to support it. Joshua D. Drake -- === The PostgreSQL Company: Command Prompt, Inc. === Sales/Support: +1.503.667.4564 || 24x7/Emergency: +1.800.492.2240 Providing the most comprehensive PostgreSQL solutions since 1997 http://www.commandprompt.com/ Donate to the PostgreSQL Project: http://www.postgresql.org/about/donate