Hey guys. Im thinking of possibly opening a small farm for mining crypto currencies so im just collecting as much info as I can. One thing I cant seem to find out about is maintenance. How much work would I need to do every day if say I started out with a 40 unit (Antminers) farm? Would there need to be someone close by all the time? Or can I just come in the morning to turn them on, leave, and come back in the evening to turn them off? To be specific, I am thinking of renting small commercial space, most likely in some kind of small town within my near vicinity.

I admit I dont know too much about this whole mining thing yet, and would appreciate any help and/or suggestions.