There's more than one way to stop a server room
We get a variation of this every year at work, some of the notable ones have been:
Telecoms engineer from, let's call them Cowboy and Witless, staking up new routers in an apps room and reaching the level of the Emergency Power Off button.
Fire alarm engineer accidentally tests the wrong sensor in an apps room, and in a panic hits the EPO rather than the Inergen hold off.
Then there was the apps room we discovered had been built with 'active' EPO break glasses that had an integral 9 volt battery. When the battery ran out, they failed safe by activating. About half a million quids worth of mission critical kit depending on 4x9V batteries around the room to remain powered, you really couldn't make it up...