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.
The first of three hot spots in the security market in 2010 was the trend of price reduction for digital HD network cameras. The reason is that the cost of a digital network HD camcorder with a resolution of 720p or more was a few RMB 7-8, 000 per unit a few years ago. With the maturing of compression technology from Hass, TI, and ADI, the cost of the chip has been continuously reduced, and now digital high-definition The cost of webcams began to fall dramatically.
From the perspective of clarity, 720p will become the mainstream and 1080p will begin to be practical. Taking a project with a few hundred monitoring points as an example, the proportion of high-definition HD cameras is about one-fifth to one-sixth. The main reason for the difficulty of large-scale application of high-definition network cameras is that the cost of high-definition cameras is very high (including megapixel lenses and the camera itself), taking the lens of a high-definition network camera as an example, the cost is lower than the D1 quality. The camera lens costs more than 50%.
The second trend is that intelligent analysis has begun to be practical in some important application areas.
Since the second half of 2009, especially with 4 trillion investment, the use of cameras with intelligent analysis has begun in key applications such as railway monitoring, and there is a tendency to use domestic products. At present, the cost of each type of surveillance camera is a few tens of thousands, and the cost is still very high. Jin Sanli Company will be locked in the middle and high-end intelligent analysis camera market in the future.
The third trend is that the application of the remote network monitoring system will soar.
Integration of security monitoring and storage should meet the needs of industry development: SAN storage technology can be quickly applied Today, VCR has basically been completely replaced, DVR storage is cheap, technology is mature, easy to use, can be operated through the remote control and keyboard, but because of The reliability and sharing are poor, and it is widely used in small-scale and distributed systems. 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.
Combination of storage and application: NVR streaming media storage technology IP network storage solutions are widely used in monitoring for their high cost performance, but such solutions have their natural defects, such as: storage server performance bottlenecks and single point of failure risk, caused by the cycle coverage File fragmentation, loss of files due to loss of power and network disconnection, 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 is gradually emerging. At present, when it comes to storage, it cannot but speak of 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.
The first of three hot spots in the security market in 2010 was the trend of price reduction for digital HD network cameras. The reason is that the cost of a digital network HD camcorder with a resolution of 720p or more was a few RMB 7-8, 000 per unit a few years ago. With the maturing of compression technology from Hass, TI, and ADI, the cost of the chip has been continuously reduced, and now digital high-definition The cost of webcams began to fall dramatically.
From the perspective of clarity, 720p will become the mainstream and 1080p will begin to be practical. Taking a project with a few hundred monitoring points as an example, the proportion of high-definition HD cameras is about one-fifth to one-sixth. The main reason for the difficulty of large-scale application of high-definition network cameras is that the cost of high-definition cameras is very high (including megapixel lenses and the camera itself), taking the lens of a high-definition network camera as an example, the cost is lower than the D1 quality. The camera lens costs more than 50%.
The second trend is that intelligent analysis has begun to be practical in some important application areas.
Since the second half of 2009, especially with 4 trillion investment, the use of cameras with intelligent analysis has begun in key applications such as railway monitoring, and there is a tendency to use domestic products. At present, the cost of each type of surveillance camera is a few tens of thousands, and the cost is still very high. Jin Sanli Company will be locked in the middle and high-end intelligent analysis camera market in the future.
The third trend is that the application of the remote network monitoring system will soar.
Integration of security monitoring and storage should meet the needs of industry development: SAN storage technology can be quickly applied Today, VCR has basically been completely replaced, DVR storage is cheap, technology is mature, easy to use, can be operated through the remote control and keyboard, but because of The reliability and sharing are poor, and it is widely used in small-scale and distributed systems. 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.
Combination of storage and application: NVR streaming media storage technology IP network storage solutions are widely used in monitoring for their high cost performance, but such solutions have their natural defects, such as: storage server performance bottlenecks and single point of failure risk, caused by the cycle coverage File fragmentation, loss of files due to loss of power and network disconnection, 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 is gradually emerging. At present, when it comes to storage, it cannot but speak of 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.