Network Video Recorder (NVR) = Functionally similar to a DVR, a NVR also accepts IP camera inputs. NVRs can be software-based, making them suitable only for accepting IP camera streams over the Internet. An NVR typically consists of a PC or Server, with on-board CPU, RAM, Operating System (Typically Windows) and local Hard Drive storage on which video streams from surveillance cameras are archived. Some examples of NVR software packages include Milestone Systems, Axis Camera Station and Luxriot.