Actually we have a single server with 256GB of ram, 4 quad core xeons and a butt load of san hd space. We are using around 260vms for production/test/dev environments as well as workbench areas, virtualized workstations, a ton of dbs, lan vms such as our windows server, file server and the rest is used for other departments in our company. Keep in mind it's our ONLY server so theres no need for vmotion or anything else. But yeah, I'm just curious if it was a hard 320 limit or a soft one and if a soft one, whats the down side to going beyond that limit.