Then hide the NVR in a locked utility room of the apartment complex.

People who break into houses are going for a few obvious high-dollar items. They're not searching for a server closet they don't know exists. They're looking for laptops, pharmaceuticals, jewelry. High dollar, portable items. not a strange-looking device hidden in a closet. And obviously you can put it in a rack that requires a key to open. They won't bother.

NVR?