[Joeri]

I think you're understating the capabilities of sql databases. Stackoverflow runs off a single dedicated ms sql server machine: http://meta.stackexchange.com/questions/10369/which-tools-an...

[Arkadir]

Your link mentions three servers with 384GB RAM and 16 RAID10, and 16 cores each. Not very far from my 128GB 32 core example :)