The computer room disconnect is in 645.10
It has to close the HVAC dampers but it doesn't need to be activated by the fire suppression system.
The controls need to be grouped at "the principle exit doors". Usually you have a halon trip, a halon abort and an EPO all under plastic bubbles. The sequence for the halon is a klaxon goes off and x number of seconds later the halon dumps. You have those seconds to decide if this is really a fire or if you want to save the $100,000 worth of halon (the 1996 price, it is probably $300k now) for another day.
I have been in a halon dump, no fun. (think tornado) I also cleaned up after another one.
They might use dry pipe sprinklers in computer rooms now but I never saw it much in the 20th century. Wet pipe is definitely not recommended. (leaks) AEC/DOE used to have a CO2 system in their Germantown Md computer room. There was some talk that OSHA made then pull it out.
I am surprised that DoD wants shunt trips on "mission critical systems". When I was in the military, mission critical systems had "battle override" that shunted out overcurrent devices. The thought was we will keep fighting until this thing burns up.
