Independent file system of video server
If the independent file system of each video server is simply adopted, the storage medium will be simply divided into many small storage areas (such as 1TB / 2TB) and then hung on each video server separately. Because the video file uses MPEG compression, the amount of data generated by different cameras at the same time period is inconsistent. Simply using a smaller independent file system will inevitably bring uneven utilization of storage capacity and will bring storage device system load Unevenness and waste. At the same time, independent file systems are also difficult to manage. As the system expands horizontally, the management of more and more independent file systems will be very complicated, and the phenomenon of uneven utilization of equipment will become more obvious. The advantages of centralized storage are difficult to play, so a global file system is needed to facilitate fuller utilization and more effective management of storage resources. Especially under the Windows platform, the system itself has restrictions on the size of the file system, and it is necessary to solve the management problem of massive file systems; it is foreseeable that as the number of monitoring points and surveillance cameras continues to increase and the retention time of video data increases, the storage capacity The expansion is inevitable, even massive expansion. Therefore, the system architecture must support the massive expansion in the future, and the cost of capacity expansion is also an issue that must be considered; for example, the central aggregation bandwidth required for 1000-channel SD signals is about 1Gbps.
In view of the above problems, in the storage and transmission of video information, it is recommended to consider the following scheme: If the network bandwidth resources are sufficient, for example, the storage system is built in the IDC room of the public IP metropolitan area network, it is suitable to adopt a centralized storage scheme.
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