Wide range of DVRs (Digital Video recorders), NVRs (Network Video Recorders), NAS (Network Attached Storage), DVRs are far from being swept away by NVRs, the uses for these all-in-one-boxes are ever expanding and becoming more and more reliable as they develop, expect features like networking to be at the core of our most basic DVR, Monitoring it from anywhere with any device, CMS allows you to centrally manage multiple DVRs in remote locations, the DVR also incorporates alarm features that will Email you events, our latest RX dvr has the RAID feature which means you'll never lose video data. NVRs on the other hand; while heavier on the budget; are the perfect companions for IP cameras, they robotically manage video footage allow you to connect and even analytics for that footage, NAS is a lighter options for the NVR that just handles the recording and some light functions.