The community database here is nearing 3GB
We own all of our own hardware (aside from the mirror servers, which were donated) and colocate it in a datacenter in Atlanta, Georgia.
If i remember right, we currently have two webservers, one devel/email server, and two database servers (one master, one slave for replication/backup (this server was the one we used to replace the db server with the fried power supply)). I believe the old db2 server will be made a webserver, but dschwab9 can probably clarify on that
Needless to say, dschwab9's been working hard on getting us set up for redundancy. Particularly with how the loss of our db server occured, the fact that we had a spare available saved us hours (and possibly days) of downtime. Put simply, we'd have been having a harder time than we were
I think that answers all the appropriate questions
Lastly, we're not about to start charging for SMF or to register here... so none of that, now :p