The future development of hard disk recorders focuses on openness

In recent years, with the rapid development of IP networks, the video surveillance industry has also entered a full-network era. The video surveillance industry in the all-network era is gradually showing the features of the IT industry. As the core product of network monitoring, Network Video Recorder (NVR) has become an IT product in nature. The main advantages of NVR are the improvement of transmission rate and the expansion of fault tolerance, and the future development focuses on openness.

Transmission rate and fault tolerance are NVR advantages

NVR is mainly aimed at network cameras, DVR products. The main function is to receive digital video streams transmitted by devices such as IPCs (Network Cameras) and DVS (Video Encoders) over the network, and store and manage them. Its core value lies in the video middleware, which is widely compatible with the coding formats of different manufacturers' digital devices through video middleware, thus achieving the advantages of distributed architecture and componentized access brought by networking. So, in fact, storage is not the main advantage of NVR.

Its advantage is to increase the transmission rate; at the same time, fault tolerance is provided through data verification. On the surface, the difference is: NVR is mainly for IP cameras, while disk arrays are for analog cameras. However, the two are actually different in terms of storage. The main function of the NVR is video surveillance. However, nowadays, many vendors in the market sell NVRs often in four- and eight-bay positions, which are directly bound users and highlight NVR storage. Especially for the 8-disk NVR, the average customer does not need such a large amount of storage. However, if the customer really has such a demand, the data storage security can not be guaranteed. In fact, this can't solve any problems in storage, and the problem that comes with it is that equipment prices are extremely high. If customers have too high a storage requirement, they should choose a disk array to solve the problem. The client chooses NVR because of its image function. If it is to be stored, it can be solved with a disk array server. Instead of adding a few drives to hard sell.

The current rise of some NVR products, users can increase their own hard drive, according to demand, from one to eight positions, emphasizing the compatibility of various devices image capabilities, as for the storage can be determined by the user's own needs.

Openness becomes the core force of NVR development

Openness becomes the core strength of NVR development in the high-definition era With the arrival of the era of high-definition surveillance, the trend of replacing NVRs with DVRs has become increasingly obvious. The mainstream manufacturers in the industry have begun to launch high-definition NVRs in a row, and NVRs are able to become popular because of its ability to promote high-definition. Monitor the power of development. This is first of all manifested in the fact that high-definition surveillance must be based on a fully networked deployment before it can be implemented. However, DVRs in the analog era have apparently been unable to adapt to this and can only withdraw from the stage of history. Secondly, the high-definition NVR itself has a series of excellent performance that makes it a core element in promoting the development of high-definition surveillance: On the one hand, to achieve high-definition monitoring must use high-definition performance NVR to match the high-definition IP cameras, this can be Users provide complete high-definition applications, and high-definition NVR HD IP cameras are also the most cost-effective HD construction solutions, which can effectively reduce deployment costs, thereby promoting the popularity of high-definition monitoring; on the other hand, NVR flexibility and integrated design brings The low-cost features can greatly enhance the ease of use and practicality of high-definition monitoring, which also has great impetus for the application of high-definition monitoring.

The openness of the NVR includes several aspects. The first is whether or not to have an interface supporting a standardized control protocol to implement access to various network front-ends and to be connected to other network management platforms. For the time being, not only NVRs, even entire networks The monitoring industry has not yet established a well-established standardized video communication mechanism. Manufacturers have their own ways, and most brands of network monitoring equipment cannot communicate with each other. Many brands of NVRs can only access their own brand of network cameras. This will not only affect the popularity of the NVR itself, but also have a great negative effect on the development of the entire industry.

As a member of the network video surveillance system, the NVR is responsible for the aggregation and management of the network front-end. Upwards are required for the access and management of the upper-level platform. In addition, the NVR also faces access from different browsing terminals. Therefore, its opening also includes opening up, down, and to the terminal.

Product selection focus on software and hardware inspection

1, storage links

Whether it is a DVR or an NVR, the storage of video is the main task of these devices. Therefore, the investigation of the storage function naturally becomes the main focus of the NVR device. For current NVR devices, it has more storage potential than DVR devices. Different machines therefore have different storage locations. While we support the choice of hard disk types, we must also focus on enterprise-quality hard disks. After all, for such equipment, it is a very good guarantee in terms of stability, reliability and so on. In addition, we can replace the disk more easily for future applications. We also prefer to have hot swappable equipment to facilitate future maintenance. Of course, higher compatibility means that more and more systems will be more easily accessible in the future. Therefore, when purchasing equipment, we must also pay close attention to the type of hard disk supported, the brand, and the maximum capacity of a single hard disk. Only by understanding these detailed indicators can we have a better grasp of the overall performance of our machines.

2, security

For embedded, its strengths are not only reflected in its stability, but also high reliability, low consumption, and power saving. It is also an advantage, and it is also applicable to the cost control of adaptation, configuration and application of different environments. Have a very good performance. In addition, the current embedded NVR has been able to give a full real-time capability of 25 FPS. Although there are still some difficulties in hardware changes, in the long run, embedded devices are still the main direction for the development of NVR. Of course, in our selection process, demand is still the first direction for our reference. When we have few management channels, we can choose embedded devices. And if the monitoring area is large, PC-type equipment is still our best choice.

3, management and operation

In our application, the convenience of control of the equipment is directly related to our application effect. Therefore, when we choose NVR devices, the management of remote applications and back-ends also needs our focus. For current remote applications, NVR devices are mainly based on NVR built-in Webserver or open remote client software for basic operations such as viewing, recording, and playback, and remote management and alarm linkage of devices and systems. Link.

For the background management, the front-end equipment can be managed and operated in the background through the system management platform, back-up data backup, hierarchical management and so on. Nowadays, many NVR devices have been able to easily complete related functions. For us, the realization of these functions is also crucial for improving remote management capabilities. Therefore, this also requires us to pay special attention when selecting equipment.

4, application software and hardware inspection

When we choose the NVR system, the system's hardware and software performance is also an important aspect that we can not ignore. In the previous article, we mentioned how to divide the device performance. However, if we choose inappropriate hardware and software, the previous work can be said to be in vain.

When we examine the function of the hardware, we need to focus on whether the device has a more convenient power supply mode. In terms of transmission, whether it can be really convenient and economical in construction or use. On the storage side, whether we have enough storage capacity and scalability, whether it can guarantee more realistic and efficient video output, etc., are all aspects that we need to consider.

5, efficient management of the back end is the key to improving the quality of monitoring

When it comes to software, the convenience of equipment applications, and security are also our focus in the software field. For example, in our application, whether the system has more intelligent work capabilities, more convenient work methods, whether it has more active security backup functions in data security, etc., are also related to our ultimate use of results.