Rather than use a video tape, a security DVR records video onto its own hard drive for playback. The quality of the digital video is much higher than the analog one.   Also, there are many more features available with digital video recorders, such as high resolution hard disk storage, date/time ,event, segment search, and a built in multiplexer that allows simultaneous recording of multiple security cameras.  All of these features and more add up to a top of the line security camera system for protecting your loved ones, business, and property.