Intelligent Network Video Monitoring Illustration and practice of monitoring storage features - Intelligent Network Video Monitoring, West brake sub -
HC Network Security 1. The characteristics of the video store Video store is a network video surveillance applications, a very important aspect. Often require vast amounts of video data stored for a long time, and the video recording information for future retrieval, playback and other services. Users can search through the application system interface, on a road, a time period of the surveillance video retrieval, playback or export the generated files. From tape to hard drive from IDE to the SAS interface, from a single disk, JBOD to a variety of RAID Technology From DAS to NAS, SAN architecture, storage area of each technological revolution have brought about a corresponding development in the field of video storage.
Video Surveillance Storage areas and civilian areas (such as video site) to apply a different video store, video store civilian areas mainly referring to broadcasting TV , Internet video, it video files stored on the server, then network users through the Video Server The visit, a video stream, therefore, primarily video live or on demand, from the storage devices "read", and play the video of the process. The monitoring in the field of video stored mainly "write" process, is a network of video data is written to Disk array To save or backup process, of course, also complicate the process of writing a certain percentage of "read" operation, which Internet users playback the video recording of the requested operation.
Video surveillance system used in data storage devices read and write in the way of other types of systems with different characteristics. Video surveillance systems typically have more control points ( Camera Quantity), the video data stream to store a long time, 24 hours of continuous uninterrupted operation and so on. Video surveillance applications, video stream is mainly written, specific features are as follows:
way video stream to write data to storage device or from the storage device playback, different from traditional reading and writing files.
multiple video a long time to write the same storage device at the same time, demands long-term storage stability.
write real-time multiple video storage system with high bandwidth requirements, and constant. capacity needs huge storage requirements of high scalability, available online replacement of faulty equipment or expansion.
Multiple concurrent read and write performance requirements on the storage devices is very high. 2. The development of video storage As introduced earlier book, and video monitoring technology in the development of sub analog video surveillance, digital video surveillance and network video monitoring, analog video surveillance storage times is the tape recorder (VCR); digital video surveillance on behalf of the times Product Digital hard disk video recorder (DVR), internal or external hard drive is the main storage device; in the era of network video surveillance, network cameras, video encoder for encoding transmission, and storage mainly in network video recorders, or NVR, NVR has a multi- kinds of storage methods, such as DAS, SAN optional. In a networked video surveillance period, the explosive growth of data, storage means to diversify, different storage structures have been applied, DAS, NAS, FCSAN and IPSAN other storage systems and digital network video monitoring system with applications in video data massive, high-speed, real-time, stable storage and retrieval.
Time in the digital video surveillance, DVR, as digital storage devices, commonly used storage method is the built-in multi-block implementation of large-capacity hard drive storage expansion mode, or by extending the interface to an external disk array, can be understood as the way DAS storage. DAS architecture is stored in a single point and the early small-scale DVR system, because the deployment is easy, inexpensive and can be widely used, this approach is characterized by single-server
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Intelligent Network Video Monitoring Illustration and practice of monitoring storage features - Intelligent Network Video Monitoring, West brake sub -
HC Network Security 1. The characteristics of the video store Video store is a network video surveillance applications, a very important aspect. Often require vast amounts of video data stored for a long time, and the video recording information for future retrieval, playback and other services. Users can search through the application system interface, on a road, a time period of the surveillance video retrieval, playback or export the generated files. From tape to hard drive from IDE to the SAS interface, from a single disk, JBOD to a variety of RAID Technology From DAS to NAS, SAN architecture, storage area of each technological revolution have brought about a corresponding development in the field of video storage.
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