Here are a few of the many differences between these devices.
– The NVR connects to the computer network and so does all the IP cameras. This allows you to take advantage of the existing network infrastructure instead of running wires from a “home base” location to all the cameras.
– The DVR uses coax connections to each of the analog cameras
– The NVR supports high resolution megapixel cameras
– The DVR supports only cameras with VGA resolution
There are many more differences between systems that use analog cameras and those that use IP cameras. To learn more take a look at our article that compares an analog system to the new IP camera systems.