No but your IT guy probably does. The only time the NEC would be involved is if you said it was "likely to be energized". (you do need the bezels on penetrations)
IT folks still want it grounded for noise suppression reasons.
Also note 645.2 and understand that most of the things you can get away with in a real data center under the floor is limited to that occupancy. Once you leave the computer room you lose a lot of that leniency. This becomes important when they convert old computer room space to office space. You should really be blocking off the HAVC between them and leaving a lot of that "free fire zone under the floor" mentality behind. I have seen AHJs who wanted all solid tiles installed and absolutely no wiring under the floor that wasn't in a chapter 3 wiring method.
