DVR : Digital video recorders capture and store video feeds produced by analog security cameras onto a hard drive. DVRs come in two types, standalone units similar to your cable box and PC-based towers that are specifically built computers with a DVR card to convert the video signal into data to be stored on a hard drive.

NVR : Network video recorders capture and store video feeds produced by network IP cameras. Most NVRs come with software which allows immense versatility through a variety of features that can be used to automate aspects of your security operations. NVRs come in standalone units and PC based video recorders.