I reasearched it a lot , but its very costly if you are wanting to do commercial COLO, works good for enterprise model. HP's POD starts at $1.5Million which is a turn key container with total infrastructure (ofcourse not the servers) just racks, cooling and stuff. And google has been using it for years now.
Thats how they create 800 acres of server farm.
IPStrada When uptime counts.
Warren Buffet: Honesty is very expensive gift do not expect it from cheap people.