What is the the largest PostgreSQL 8.x database that is running in a production environment that you are aware of? We top out at roughly 400 GB but have a need for a new project to go much, much larger (in the several TB range). I am attempting to get a feel for how large one should take a single PostgreSQL database, given all of the operational concerns such as overall performance with a thousand+ concurrent users, times/space requirements for backups and restores, how to upgrade to newer upcoming versions of the software, etc. especially since there are no parallel operations/features in the product.
Any information you can provide would be very helpful. Thanks, Keaton