Traditional storage of video surveillance system is facing changes

Security monitoring technology has gone through three stages: simulation, digitalization and networking. The birth of network monitoring has solved the problem of remote transmission effect of traditional monitoring, and has also changed the traditional connection mode to make it simpler and more convenient, however, it also leads to larger storage requirements and higher bandwidth requirements. Accordingly, monitoring data storage has also gone through several stages: VCR analog data storage, DVR digital storage, centralized network storage, and now cloud storage. The emergence of monitoring cloud storage has broken through the performance and capacity bottleneck of traditional storage methods, enabling cloud storage providers to connect a large number of different types of storage devices in the network to form extremely powerful storage capabilities, the linear expansion of performance and capacity makes it possible to store massive data. Cloud storage technology is an important means to break through the bottleneck of ip hd monitoring storage. Cloud storage technology has a great application prospect in the development of security monitoring industry. Compared with the traditional storage system, the cloud storage system first, from the perspective of functional requirements, the cloud storage system is oriented to various types of online network storage services, traditional storage systems are designed for applications such as high-performance computing and transaction processing. Second, from the perspective of performance requirements, cloud storage services need to first consider data security, reliability, efficiency and other indicators, moreover, due to the characteristics of large scale of users, wide range of services and complex and changeable network environment, the realization of high-quality cloud storage services is bound to face greater technical challenges. Third, from the perspective of data management, cloud storage system should not only provide traditional file access similar to POSIX, but also support massive data management and provide public service support functions, to facilitate the maintenance of cloud storage system background data. 1. The data storage layer cloud storage system provides a variety of storage services. The data of various services are stored in the cloud storage system to form a massive data pool. The traditional data organization based on a single server cannot meet the requirements of throughput performance and storage capacity under the condition of multiple users in the WAN; Data organizations based on P2P architecture need a large number of nodes and complex coding algorithms to ensure data reliability. In contrast, the data organization method based on multi-storage servers can better meet the application requirements of online storage services. When the user scale is large, building a distributed data center can provide better service quality for users in different geographical regions. The data storage layer of cloud storage connects different types of storage devices to realize unified management of massive data, centralized management of storage devices, status monitoring and dynamic expansion of capacity, it is essentially a service-oriented distributed storage system. 2. Data Management the data management layer in the cloud storage system architecture provides a unified view of public management among different services for the upper layer. By designing unified public data management functions such as user management, security management, copy management, and policy management, the underlying storage and upper-layer applications are seamlessly connected to achieve collaborative work between multiple storage devices, provide a variety of services with better performance. 3. Data service layer the data service layer is a flexible and user-oriented part of the cloud storage platform. According to the needs of users, different application interfaces can be developed to provide corresponding services. Such as data storage services, space leasing services, public resource services, multi-user data sharing services, and data backup services. 4. User access layer. Through the user access layer, any authorized user can log in to the cloud storage platform at any place using a networked terminal device according to the standard public application interface, enjoy cloud storage services. Application prospect of cloud storage in video surveillance system 1. Security. From the birth of cloud computing, security has always been one of the primary considerations for enterprises to implement cloud computing. Similarly, in terms of cloud storage, security is usually the primary commercial and technical consideration. Many users have higher security requirements for cloud storage than their own architectures can provide. Even so, in the face of such high unrealistic security requirements, many large and reliable cloud storage vendors are also trying to meet their requirements, build a data center that is much more secure than most enterprise data centers and (US National Security Agency) Comparable encryption and protection layers to protect data in storage. 2. Portability. Some users also consider the portability of data when considering managed storage. In general, this is guaranteed, and the solutions provided by some large service providers promise their data portability comparable to the best traditional local storage. Some cloud storage combines powerful portability to transfer the entire data set to any medium of your choice, even a dedicated storage device. 3. Performance and availability. In the past, some managed and remote storage always had the problem of long latency. Similarly, the characteristics of the Internet itself seriously threaten the availability of services. The latest generation of cloud storage has made breakthrough achievements, which are reflected in the cache of clients or local devices, keeping the most frequently used data locally, thus effectively alleviating the Internet latency problem. With local caching, these devices can mitigate latency problems even in the face of the worst network outages. These devices can also make frequently used data look as fast as local storage. Through a local NAS gateway, cloud storage can even simulate the availability, performance, and visibility of mid-range NAS devices, while remotely protecting data, and this level of data protection can only be achieved by a few enterprises. Another problem with performance is that when the data change rate is too high, these solutions may consume too much Internet bandwidth, and this may incur hidden costs for your cloud storage solution. Even so, manufacturers will continue to work hard to achieve capacity optimization and WAN (Wan) Optimize to minimize data transmission latency. 4. Data access. Another common concern is whether cloud storage can provide sufficient access if performing large-scale data requests or data recovery operations. Some vendors can transfer large amounts of data to any type of medium, and can transfer the data directly to the enterprise, and the speed is equivalent to the copy and paste operation. In addition, some vendors can provide a set of components to simulate cloud addresses on fully localized systems so that local NAS gateway devices can continue to operate normally without resetting. If large manufacturers build more regional facilities, the data transmission time will be shortened. More importantly, even if your local data has suffered catastrophic losses, manufacturers can retransmit the data. Cloud storage can realize full virtualization of storage and greatly simplify applications, it saves the construction cost of customers and provides more powerful storage and sharing functions. Some manufacturers provide special cloud storage systems for monitoring, which can meet the different needs of operators and user units. With the trend of the combination of security monitoring technology and user needs becoming more and more obvious, in the process of integration and implementation of security monitoring products, storage technology must constantly adapt to the application characteristics of security monitoring and constantly improve itself, the integration of storage products and security monitoring technology has become the general trend. Monitoring cloud storage system is a product that combines storage and monitoring, which also confirms this development trend. From the current point of view, the remote and networking of security services is a very clear trend. The only problem is that video surveillance, as a major branch of the security field, consumes a large amount of data on network bandwidth. At present, I am afraid it is not fully equipped with the conditions of data centralization. It is inevitable that the data center model will introduce and gradually dominate the form of the security industry, but it does not fully imitate the 'cloud computing' model of the Internet. The 'data center mode' in the security field must have its own characteristics. It may be a combination of centralized distribution or a physically dispersed and logically centralized mode.