Cloud storage can achieve complete virtualization of storage, greatly simplifying application links, saving customers' construction costs, and providing stronger storage and sharing capabilities.
Security monitoring technology has gone through three stages today: simulation, digitization, and networking. Correspondingly, monitoring data storage has also undergone several stages: VCR analog data storage, DVR digital data storage, centralized network storage to the present, and recently emerging cloud storage technologies.
In response to industry development needs: SAN storage technology can be quickly applied
Today, VCRs have basically been completely replaced. DVRs are cheap to store, mature, and easy to use. They can be operated by remote control and keyboard, but due to their poor reliability and sharing, they are widely used in small-scale, distributed systems. in. With the expansion of the monitoring scale, an extended storage mode has emerged in the DVR mode, namely, a codec external storage device, which mainly adopts storage protocol extensions such as SATA, USB, and SCSI, and is suitable for small and medium-sized deployments, and monitors video data through RAID technology. Reliability has been guaranteed. However, this mode is generally directly connected, cannot be shared and has low scalability, and is not suitable for large-scale data storage.
To meet the needs of large-scale monitoring projects, SAN storage area network technology can be quickly applied. The SAN centralized network storage or storage system is deployed behind the video storage server. The server connects to the codec, downloads data through the storage protocol, and writes it to the storage device. Servers and storage devices are connected via standard storage protocols (SCSI, iSCSI, NAS, FC). This method is suitable for large and medium-sized monitoring systems. In this mode, the Ethernet-based storage mode (iSCSI, NAS) has better scalability and manageability, and can realize centralized storage of data and unified management and sharing of space, and has high cost performance.
Storage and Application: NVR Streaming Storage Technology
IP network storage solutions are widely used in monitoring for their high cost performance, but such solutions have their own natural defects, such as: storage server performance bottlenecks and single point of failure risk, file fragmentation caused by the cycle coverage and file loss caused by power loss off the network. , System instability, etc. These problems often cause serious application accidents in large-scale monitoring systems.
Aiming at this type of problem, a NVR streaming media network video monitoring storage technology combined with the application has emerged. Its storage system can directly obtain data flow from the front-end, but the entire system can completely get rid of the storage server, eliminating the potential risk of failure. At the same time, the storage system has comprehensive advantages in managing data flow. For example, Bonnor’s NVR storage system performance has doubled, while eliminating file fragmentation, resolving system instability caused by power outages, integrating video, retrieval, and playback functions to achieve fast and accurate retrieval, efficient playback, and support for network disconnection. Video and P-class mass volumes. The NVR storage system is more suitable for mass video surveillance data storage.
The application of cloud storage technology gradually emerged
At the moment, when it comes to storage, it cannot but speak about cloud storage. This is a highly tempting storage technology. Cloud storage can achieve full virtualization of storage, greatly simplify the application process, save customers' construction costs, and provide stronger storage and sharing capabilities. All devices in cloud storage are completely transparent to users. Any authorized user anywhere can connect to cloud storage through an access line for spatial and data access. Users do not need to care about the storage device model, quantity, network structure, storage protocol, application interface, etc., and the application is simple and transparent.
It is worthwhile to note that the industry has begun to successfully market this ideal storage model. Some manufacturers can even provide specialized cloud storage systems for monitoring applications, 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 obvious, in the integrated implementation of security monitoring products, storage technology must continue to adapt to the security monitoring application characteristics, and constantly improve themselves, the integration of storage products and security monitoring technology is already The general trend. Monitoring cloud storage systems is the integration of storage and monitoring products also confirmed this trend.