Network video recorder (NVR) is a software program that records video in a digital format to a disk drive, USB flash drive, SD memory card or other mass storage device
Quite simply, DVR stands for Digital Video Recorder, which CAN include network cameras, and in fact, a system with ONLY network cameras is also a DVR; NVR is simply a more specific term to indicate that the system is network-only with no analog capture hardware. Being strictly semantic, a NVR is a DVR... however, the important difference to remember is that you need a DVR if you have or plan to use standard analog cameras * , or an NVR if you're using network (IP) cameras (since the N stands for Network). A network video recorder (NVR) is a software program that records video in a digital format to a disk drive, USB flash drive, SD memory card or other mass storage device. Video on a DVR is encoded and processed at the DVR, while video on an NVR is encoded and processed at the camera, then streamed to the NVR for storage or remote viewing. Hybrid NVR/DVR security systems exist which incorporate functions of both NVR and DVR; these are considered a form of NVR. 3. Another difference between a DVR and an NVR is access. To view the video that was recorded, you need to be at the DVR (or burn a disk if you want to view it elsewhere). But with an NVR, due to its very nature of being on a network, you can view it remotely. 4.  Organization. NVR, Inc. operates in two business segments: homebuilding and mortgage banking. The homebuilding unit sells and constructs homes under the Ryan Homes, NVHomes, Fox Ridge Homes and Heartland Homes. As a corporate entity, NVR, Inc. provides various support functions for each of its sub-entities.  Let’s begin by outlining the name structural. DVR (Digital Video Recorder): An analog and/or IP based recorder is a consumer electronic device or application software that records video in a digital format to a disk drive, USB flash drive, SD memory card or other local or networked mass storage device. Video on a DVR is encoded and processed at the DVR, while video on an NVR is encoded and processed at the camera, then streamed to the NVR for storage or remote viewing. An NVR is a software program that records video in a digital format to a disk drive, USB flash drive, SD memory card or other mass storage device. An NVR contains no dedicated video capture hardware. However, the software is typically run on a dedicated device, usually with an embedded operating system This is a quick video demonstration of the differences between a DVR and an NVR. In this video you can learn how an NVR is connected to a Router and also the type of cables that it uses. Also you can see the type of cable that a regular DVR uses. To find out more information or to purchase one go here: First off, if you do not know what those two terms stand for, here is your answer: DVR – Digital video recorder & NVR – Network video recorder. Now that we’ve got those two things out of the way, it’s time for an evaluation. The NVR. The NVR, or network video recorder, is one of the more popular choices these days. As with much of our other electronic devices, the option or capability of going wireless is always quite appealing. Gone are the days when our computers had to be constantly attached to a router via ethernet cord. A Network Video Recorder, or NVR is an internet protocol (IP) based device that sits on your computer network. Since the NVR sits on your computer network, Network Video Recorders can be accessed and managed remotely via your Local Area Network (LAN) or over the Internet, allowing you greater flexibility. DVR vs. NVR. Both DVRs and NVRs can range from entry to enterprise level. NVRs, with the use of video encoders and supported recording software can provide a hybrid system where analog, digital and IP cameras can coexist.
http://www.cctvforum.com/viewtopic.php?t=17803 https://en.wikipedia.org/wiki/Network_Video_Recorder http://www.onesourcesecurity.com/portal25/one-source-security-blog/entry/4-differences-between-dvr-s-and-nvr-s http://www.nvrinc.com/About.aspx http://www.securitycameraking.com/securityinfo/dvr-vs-nvr-what-is-the-difference/ http://www.youtube.com/watch?v=FcziBM3zkR4 https://soltechsecurity.wordpress.com/2014/07/23/dvr-or-nvr-who-does-it-better/ http://www.techally.com/cctv-surveillance-security/cctv-dvr-nvr
what is an NVR