HD storage development trend: network monitoring occupies the mainstream in the short term

The front-end equipment of high-definition monitoring system can be divided into two categories according to the transmission mode, namely network high-definition and HD-SDI. The 1.3-megapixel and 2-megapixel front-ends in network high-definition have been widely used in civilian surveillance sites, and their applications in the industry are even more avant-garde. The 5-megapixel snap cameras are everywhere. HD-SDI, as a broadcast-level video capture and transmission method, has begun to emerge with its huge advantage of no delay, and has been promoted and applied in the industry. For a certain period of time, the high-definition monitoring products on the market are mainly network high-definition equipment.

 

的 The advantages of network high-definition monitoring equipment are: simple deployment, easy transmission, and simple debugging. HD-SDI front-end equipment is more expensive than network high-definition equipment, transmission cables are expensive, transmission and storage need to be encoded first, and the back-end processing equipment has poor compatibility with other front-end equipment. Compared with the above two HD implementation modes, each has its own advantages and disadvantages, which also shows that HD monitoring is developing at a very fast speed.

 

完美 The perfect combination of network video surveillance and high-definition storage makes the national high-definition just around the corner

 

1. The high-performance reading and writing speed of the storage device provides guarantee for the realization of high-definition monitoring system. High-definition front-end equipment must be effectively integrated with high-definition storage equipment in order to maximize the overall operating effect of high-definition front-end and storage. Due to the limited read and write performance of storage systems, some large monitoring systems have to be equipped with a large number of storage devices.

 

Taking the common storage architecture in the market as an example, the average I / O read / write speed of each 1T hard disk can reach a maximum of 15-20MB / S, and the storage device with a capacity of 60TB can read and write I / O concurrent read and write speeds of 0.9- 1.5GB / S, with the rapid development of disk read and write performance, I believe that the above read and write speed will be refreshed soon. Special technologies for improving transmission efficiency, such as dual network cards and fiber optic interfaces, have been continuously developed, which has greatly reduced the restrictions on device read and write speeds.

 

Cloud storage, as a new storage operation mode, can completely virtualize storage and simplify the application process of storage. The most important feature saves users the cost of deploying a large number of storage devices and only needs to pay a small amount of storage service fees. Enjoy powerful storage and sharing services. With the current market share of video surveillance constantly increasing and the rapid promotion of high-definition surveillance, storage has become the core of surveillance systems, which also makes cloud storage an inevitable direction for storage development.

 

2. Hybrid DVR provides an excellent solution for the combination of high-standard mixed storage mode. With the current trend of high-definition surveillance intensifying, it is virtually putting more pressure on the established surveillance system. Early surveillance systems are on the verge of being phased out, and executives are constantly hovering between HD and SD solutions. Directly adding high-definition monitoring points will have compatibility issues with older systems, and the equipment being managed will be uneven.

With the continuous development and progress of storage technology and storage market, and the increasing awareness of services in various fields, some more humane and more economical implementation methods will surely become darlings on the market. After the hybrid hard disk video recorder is applied, high-definition, standard-definition, and analog front-ends can be managed, played back, and queried through the same platform. It can also be used as a node device to perform device management, recording, and query functions in a small area. The hybrid hard disk video recorder can be said to complement and improve the embedded NVR. The embedded NVR, as a node device, implements unified management, recording, and viewing of the network front-end functions. The hybrid hard disk video recorder integrates the analog front-end. Make up for the shortcomings of embedded NVR. It will play an irreplaceable role in the expansion and transformation of the early-built monitoring system.