Features of network video surveillance storage device

For video surveillance, image definition is undoubtedly the most critical feature. The clearer the image, the more obvious the details, the better the viewing experience, and the higher the accuracy of intelligent and other applications. Therefore, image definition is the eternal pursuit of video surveillance. However, as high-definition video, such large video files often have a file size of several gigabytes to dozens of gigabytes, and emerge like a tidal wave, which not only requires higher storage capacity, but also puts forward higher requirements for read-write performance and reliability.

The birth of network monitoring has solved the problem of traditional monitoring effect, changed the traditional connection mode, which is simpler and more convenient, but at the same time, it has derived larger storage requirements and higher bandwidth to meet.

The storage device used in the video surveillance system has different characteristics from other types of systems in the way of data reading and writing. The video surveillance system is generally characterized by many monitoring points (many cameras), large video data stream, long storage time, 24-hour continuous operation, etc. Video monitoring applications mainly focus on the writing of video bitstreams, with the specific features as follows:

Video data is written to or played back from the storage device in streaming media mode, which is different from traditional file reading and writing.

Multiple videos are written to the same storage device for a long time, which requires the storage system to work stably for a long time.

Real time multi-channel video writing requires the storage system to have high bandwidth and constant.

With huge capacity requirements and high storage expansion performance requirements, you can replace faulty equipment online or expand capacity.

The performance of the storage device is very high when multiple concurrent reads and writes occur.