So, you want to move from your crusty old hardware to a shiny new server? Here's what you have to do:

1. Assemble and test your new hardware
2. Turn off both systems
3. Disconnect your boot device from the old server and connect it to the new server
4. Disconnect your hard drives from the old server and connect them to the new server
5. Turn on the new server
6. If necessary, reconfigure networking

That is it.