Who here can walk into a data center now devoid of its IT staff, and be fully up to speed with a whole new staff? Even if you're starting out with a detailed a

Who here can walk into a data center now devoid of its IT staff, and be fully up to speed with a whole new staff? Even if you're starting out with a detailed and valid plan of the IT transition, you'll still end up wiping and reloading the various boxes involved, resetting the network access control, resetting the switch and controller and server passwords, re-launching whatever mail server(s) you're going to be using, tracing out the occasional unmarked wire or busted connector, and a whole litany of minutia. And you can't do any of the client-site transition until the old staff and the old IT staff is out of the building, and you have the keys to the facility. Even if you're running your new servers and such remotely and completely in parallel and need only flip DNS and thus you're staging your client gear, how long does it take to carry in and unpack and install and connect it all?