The Video Server is similar to the Network Video Recorder (NVR) in that they both record the video. The Network Video Recorder comes with the VMS software already installed, while the Video Server does not include the VMS software. You can select the VMS you like and then load it on the Video Server. The Video Server usually runs Windows operating system and is more flexible than the NVR because it is easier to expand and add cameras. The NVR usually has a fixed limit to the number of cameras it will support.
