In my opinion and in our company's opinion this is a very bad mining rig => you need to use good equipment which is uselles at mining at the moment but you need to require good system standards.

The biggest 2 problems of this miner are:

High investment cost....
24GPU miners work like crap. We expiremented for 3 weeks with a 24 GPU miner and these one are not working stable. The stable working of a miner is very important.. always reboot or else is annyoing and time consumptioning.