You would also need a place to set them up, wiring between them, and someone to keep them all running. That would be difficult and probably not the best use of your time. The power supplies for the miners run more efficiently at the higher voltage. Cooling Bitcoin miners put out a lot of heat. The nice thing is, there are no hard drives in these systems, so they can run hotter than a typical server.
In my first location, I put in place a large exhaust fan that was rated at 10, CFM.
I had to match the intake vents to 10, CFM of airflow also, of course. That took up twice the space of the fan. You will need a way to direct the flow of air so it does not bypass or recirculate around your Bitcoin miners. Infrastructure This is all the stuff that you need to get the Bitcoin miners connected and working. It helps to have a little bit of data networking knowledge here.
Easiest way to get that is to pick up a Cisco CCNA certification guide from the bookstore and use that as a reference. It does not need to be fast, but it should be reliable.
The Bitcoin miners can only earn money if they can download the hashing puzzles from the Internet and upload the solutions. It would be useful to have a firewall that has remote access VPN capability, so you would be able to access the equipment remotely.
Network Switches Each of the Bitcoin miners has a network connection. It needs to plug into something. I prefer to buy used Cisco 48 port switches.
You are going to need an electrician to run electricity to your miners. These can be tricky to figure out. This is a handy guide from APC to all the different types of power connectors that can be used in North America Video Surveillance System These are really inexpensive these days.
Connect a cheap 4 camera video surveillance system up to your network. Shelves I bought cheap shelves from Lowes and Home Depot.