DVRs from all manufacturers are equipped with centralized management software, which can be used to manage the video image and video unified storage of multiple hard disk recorders. All hard disk recorders can be connected to serial port hard disks, and users can select hard disks of different sizes to connect them according to their recording storage time.

The hard disk video recorder is a digital video recorder. Compared with the traditional analog video recorder, the hard disk video recorder is used for recording, so it is often called the hard disk video recorder, also called DVR.