CCTV security is becoming more and more familiar to all kinds of business. Like the security cameras, recording systems also have an important role in the CCTV security systems. Digital Video Recorder takes the analog video signals and converts them to digital format. By converting analog video signals, the DVR brings your analog cameras into the digital age. It is really an efficient solution for those who are not willing to move to complete IP Surveillance structure. DVR opens up new choice for viewing and managing the video feeds. Comes with varied size hard drives DVR extends the scope of good storage capacity and it allows the reviewing of videos too. With these reasons, DVRs are the mainstay of any analog CCTV surveillance system.