One? Your colo probably also will rent you help to rack, wire, and anything else physical. How many days do you expect to be "downtown?" Apart from the physical

One? Your colo probably also will rent you help to rack, wire, and anything else physical. How many days do you expect to be "downtown?" Apart from the physical / racking aspect, it's not like your Ops has any less work to do with respect to clouds. You still have to manage your own software services, security, etc on either platform. You could triple your provisions with the savings of not being on the cloud, so it's hard to believe you won't see the train coming, if the concern is having to rack more than 20-60 servers a day. Arguably, that would be a good problem to have!