DVRs with coaxial cables generally have image quality that deteriorates after around 300 feet. With an NVR system, you can get around this by using a POE extender, POE injector, or POE switch to extend cables over long distances, while maintaining high image quality. NVRs offer high flexibility — connected to the same IP network, NVRs can be installed virtually anywhere in your building.
Since NVRs use a software program to automatically record video in a digital format, they can easily transmit data over computer networks and even remotely stream security footage in real time on a mobile device. NVRs are also typically newer and more advanced systems that offer higher video quality, compatibility with more cameras, and more flexible features.
For business security systems with existing coaxial wiring and analog cameras, installing a DVR is the best bet. For commercial security camera systems starting from scratch, NVRs are a great choice, which offer higher-resolution IP cameras and remote video feed access.