Video Management System (VMS) 

Video management system is used in CCTV system. Video management system enable users to record and view video from CCTV. Video management system also known as video management software. Video management system collect video from camera and stores to storage device and also used in security system. Video management system can be the software components of a network video recording (NVR) and digital video recording (DVR).

Digital Video Recorder (DVR)

Digital video recording is a electrical device. Record video in digital format to a disk drive, USB flash drive, SD memory card, SSC or other local networked mass storage device .

Network Video Recorder (NVR)

Network video recorder is specialized computer system that include a software program. Network video recorder record video in digital format. Network video recorder store data and remote viewing. Network video recorder store image in HD format.