No, and not even close. The bottle neck is the network, so unless he is running a database in the background, it is not going to improve speed in the least. 14TB drives are not that fast. Video 4gb, or 8gb, and as little ram as possible. Not much processing is needed either. That is why NASs are built in celerons. In 6 years, when he knows something, he will see the extreme error of his ways.
My NAS has 2x2Tn striped and a video 1Tb. It streams 4k to multiple sources. If I needed faster, I'd throw it on the install server. 4x1TB striped, and 8Gb of ram. 2xGbit net. Did it tell you this cost all of $60?
