Digital Video Recorder (DVR)
An electronic device that records video in a digital format to a disk drive, USB flash drive, SD memory card, SSD or other local or network mass storage device. It is often referred to as the backbone of a quality digital surveillance system.
Network Video Recorder (NVR)
Network Video Recorders are designed to allow recording of multiple cameras and ensure that all actions, events and activities happening within premises. Support of IP cameras and megapixel cameras, large storage space, high-resolution image recording, video archival and good frame rates.