Most of the surveillance video storage comes at the cost of very large data streams, so there needs to be enough storage space for HD video. The choice of HD storage systems and solutions will directly affect a series of factors such as video fluency and system stability. Therefore, it is necessary to analyze the storage characteristics of HD video surveillance. This article refers to the address: http:// · High-definition surveillance camera video storage data volume, customers generally require video storage time no less than 7 days, more storage channels (up to a few roads, tens of thousands of roads), resulting in a large storage space required, investment The cost is high and the storage capacity demand increases linearly and explosively as the image storage time increases. Therefore, the video surveillance system storage must support large capacity and the capacity has high scalability to meet the needs of long-term and large-capacity video image storage. . · Video surveillance has low performance requirements for storage. Most of the stored videos are non-critical data. The reliability of storage is lower than that of network management, configuration, and production and operation data. · Most video surveillance applications are based on after-the-fact forensics, supplemented by real-time monitoring. This requires ensuring the real-time and reliability of video storage, minimizing the risk of video storage interruptions as much as possible; and ensuring video playback images. Quality, to reduce storage space, can reduce frame rate storage. The real-time monitoring point image is written to the storage device by streaming media, and the stored video file is read by the streaming media when the client plays back. This type of reading and writing is different from the small data block or file level reading and writing method used in the storage of a common database system or a file server system. Video surveillance needs to be able to satisfy long-term continuous data write operations. The read operation is relatively small, that is, real-time video recording is frequent, but video playback is relatively small. · Video data retrieval should be convenient, fast, and quick to locate video data. The main solutions for storage today include direct-attached storage (DAS), storage area network (SAN), and network access storage (NAS). DAS is a storage system with a relatively simple architecture, but it does not realize the separation of storage and forwarding, and the performance requirements of the server are relatively high. Due to the limitation of distance, DAS is difficult to expand, and it is not suitable for the business platform of the “global eye†and large capacity requirements of the WAN. NAS has greatly improved its performance, but its design is still based on file sharing. The file system query is slow and the capacity is unmanageable. When the data is more and more, there may be cases where it cannot be called. It is not suitable for streaming media, especially Monitored applications. SAN can be divided into FCSAN and IPSAN. FCSAN is more used for high-bandwidth, low-latency IT systems in the data center area, and the construction cost is high, which is not suitable for video surveillance systems. IPSAN is at cost and network distance. , system performance and many other aspects are more suitable for wide area network, large-capacity video surveillance storage system. The emergence of the IPSAN architecture enables servers and storage to achieve greater performance. Whether it is server expansion or storage expansion, the separation of storage and forwarding is the platform-to-server requirement, and the SAN architecture is block-increasing. The quantity is stored, the query is fast, the capacity can be managed, and it can be operated. It is suitable for large systems, the data response time is short, and there is no time difference, which becomes the first choice for video surveillance storage solutions. Mini Pc,Mini Computer,Fanless Mini Pc,Fanless Mini Computer Shenzhen Innovative Cloud Computer Co., Ltd. , https://www.xcycomputer.com