Tag: Video Storage Video Surveillance
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A large-scale industrial and mining enterprise covers an area of ​​more than 5 million square meters. The monitoring points are widely distributed and the number is large, and it is constructed in batches. Since these monitoring systems are built in different periods and different departments, the monitoring screen and video data are generated. Dispersed, problems with poor performance appear.
In order to establish a high-quality and efficient production management system, form a good production system, effectively protect the legitimate rights and interests of employees, personal safety, promote business development, protect corporate property, and combine "human defense" and "technical defense" to further the enterprise video surveillance system. Enhance to achieve the purpose of preventing crime, improving law and order, improving management efficiency, and better serve the efficiency of enterprises.
Status and needs
The video surveillance network of a factory is mainly used for public security prevention in all important positions in the factory. From the overall video monitoring process, it can be roughly divided into four parts: front-end camera gun, front-end video processing equipment, transmission equipment and terminal equipment. The overall architecture topology is as follows:
Situation Analysis
(1) The video storage method has high risk. At present, all video surveillance videos are stored on more than ten household PCs. The storage medium provided is a desktop application level hard disk, facing 7X24 hours of continuous storage intensity. Often not competent; and all recorded data is stored on a single hard drive, and once the hard drive is damaged or the operating system fails, all recorded data will be difficult to recover.
(2) The video storage space is insufficient. For the enterprise, long-term preservation of video evidence is a strong evidence to ensure that the investigation event after the accident occurs. The basic requirements for the general monitoring area are more than 30 days. For important monitoring areas, it is even necessary to keep the video for more than half a year. Data or permanent backup. Due to the use of ordinary PC local storage, the storage space is limited, resulting in storage time is far from being achieved, and even in order to achieve the purpose of extending the recording storage time, the video recording resolution is used to store the video, so that the recording effect is greatly reduced.
(3) Video surveillance management is scattered, and a unified monitoring center system is not formed, so that the enterprise's public security monitoring network cannot form an overall network, resulting in various problems such as finding troubles in monitoring and management, unscheduled scheduling, and scattered video storage.
User needs
(1) Improve the security of video data storage, use professional storage technology to ensure the reliability of data storage, even if some hard disk damage occurs, the overall video data can still maintain integrity.
(2) Meet the existing 143 channels of video data for at least 30 days, some data can be saved for more than 60 days, and have enough space to back up important video data, and have good post-expansion, which can meet more video. The need for data storage.
(3) Establish a centralized and unified video surveillance platform to achieve centralized monitoring, centralized storage, and centralized viewing of the video surveillance core.
(4) Under the premise of small impact and quick implementation, the direct connection between the front-end video network and the back-end monitoring room is realized, and the public security network and the office network are independent.
Technical solutions
Overall design
According to the user's current situation and needs, according to the objectives and principles of the program design, this program will improve and upgrade the video storage, monitoring core platform, public security network and front-end coding equipment in the public security monitoring system.
Storage system design
Because the data volume of the video surveillance is relatively large, and the data security requirements are high, the way to save the video data on the hard disk of the PC host is not applicable to the current large video surveillance network. Based on cost, performance, capacity, and ease of implementation of the environment, the centralized storage solution based on the FCSAN architecture was chosen. The overall diagram is as follows:
Video storage capacity design
At present, the mainstream video surveillance video recording rate is 2Mb/s. Currently, there are 143 channels according to the camera used. It needs to be stored for at least 30 days, according to the following formula:
143 road 30 days of data volume ≈ 143 * 30 * 2M * 60 * 60 * 24 / 8 / 1024 = 90TB
In addition, according to the needs, some camera images need to be saved for 30 days, calculated by 30 channels:
30*30*2M*60*60*24/8/1024=19TB
The total required capacity is: 90TB+19TB=109TB
The design principle of unified storage in the data set, and considering the video monitor head with a large number of channels in the later period, the requirements for the storage array can provide more than 109T storage capacity in a storage server system, and can be extended to 200TB. the above.
Centralized monitoring platform design
Create a centralized and unified video surveillance platform, using a few servers to replace the existing multiple PC surveillance video architecture. The core architecture of the video surveillance platform that achieves centralized monitoring, centralized recording, and unified scheduling. As shown below:
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