What is the difference between a recorder and a server?

In recent years, China's security industry has experienced rapid development, especially in the field of monitoring, and servers are an important part of monitoring equipment. But what is the difference between a server and a video recorder, making the choice of the market so difficult.
In recent years, with the continuous development of China's network technology, the security monitoring field has entered the era of full network. In the increasing popularity of monitoring network, as an important part of network monitoring: NVR has gradually become an important part of the entire network equipment.
The full name of NVR is NetworkVideoRecorder, which is the network video recorder that we often mention in security monitoring. Its core features must also focus on its network function, namely its networked features. In the framework of the entire system, the network camera and video encoder are at the forefront of the device. The analog audio and video received by the camera through the camera is transmitted to the NVR in the form of IP code stream after being digitized by the encoder, and then the NVR performs centralized video storage, management and forwarding. Based on the working characteristics of NVR, it is destined to have more flexible working characteristics. Therefore, it is possible to implement on-demand deployment according to the environment without being restricted by the physical location in the network.

The difference between NVR and DVR Speaking of NVR, you may naturally think of the "predecessor" of DVR, the NVR. Compared with DVRs, although they belong to the "family", their differences are very obvious because they work differently.
The first difference in the working environment is the difference in working mode. In the traditional DVR system, since the monitoring center and the DVR are connected in an analog manner, this connection mode is easy to increase with the transmission distance. Causes loss of analog signals. This feature is also doomed to the limitations of the DVR in the manageable range, so it is often limited to the analog monitoring system with a small monitoring area. As the monitoring system of the network-wide architecture, the NVR can break the geographical restrictions through the ip network and appear in the place where it should appear.
In addition, in terms of work independence, the DVR can independently acquire, compress, store, and manage the video, and the NVR must work with the front-end camera and dvs to achieve normal work.
Different storage functions
One of the biggest roles of DVR devices in our applications is their powerful recording and storage capabilities. However, because it is limited by the overall working pattern, DVR is more of a role in the back-end "equal signal". Once there is any fault in the front-end line or equipment, it is easy to cause the signal because it cannot be transmitted to the DVR. Storage causes loss. For the NVR device, because of the overall structure of the system, the NVR can support any point in the front end, the central control link, and the client three points, and automatically complete the center control and front end when the system is not working properly. Back up each other. Therefore, once there is any failure in the system, it will not cause data loss, which is more prominent than DVR equipment.

Differences in management and maintenance Compared to DVR devices, the overall network management capabilities of NVR devices are undoubtedly one of several obvious highlights. In management, the NVR device can smoothly implement the monitoring and management of the transmission line, the transmission network, and all network front-end devices, including the working status of the device. For DVR devices, the same is due to the characteristics of analog transmission from the center to the front end. Therefore, it is difficult to realize unified management of devices and lines in the overall system, not to mention the monitoring capability of the devices. Many are very inconvenient.
In addition, on the wiring of the device, the NVR is also simpler than the DVR line.
Differences in security For the security of video surveillance, it has always been the focus of attention. In the management of video security, NVR has quite perfect measures such as encryption or authentication. This is undoubtedly more secure than the "streaking" in the signal transmission process of DVR equipment. Perhaps the management scope of the DVR is small, so the security risks assumed by the equipment are relatively small, but for the NVR working with the network, This kind of protection is even more necessary.

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