Objectively speaking , the current analog technology also occupy a large proportion , just it is very obvious limitations , digital and network guard technology increasingly broad and deep is the fated trend of development. In the early analog and digital technology security market , more emphasis on the user ‘s hardware devices, such as cameras, etc. , so in the first generation and second span surveillance systems , storage systems need to be resolved is how to monitor the data real et sequens complete record for contingency queries efficiently , so the importance of play is very limited monitoring material , we can comment the center is on monitoring data collection and transmission side . With the development of network monitoring and data acquisition applications which is increasingly common , increasingly wide range like acknowledged data storage methods can not meet the vociferous , that even the most basic data are difficult to meet later for future reference . From the user’s perspective, the extant monitoring system is essentially independent of each , individual industries or sectors within different regions of a variety of useful information can be obtained ended the watch camera, but it is difficult to achieve shared , not to mention security effective management information.
In fact , security monitoring systems for security monitoring technology itself nay only put forward higher requirements, while storing monitoring data also put forward higher requirements. With the application of the requirements of scale and beautify security monitoring systems, higher requirements for monitoring facts can be reflected in several code areas: reliability and integrity monitoring of stored data ; monitoring data storage scalability , including: how to confront the data acquisition requires higher resolution or more collection points , how to meet the needs longer data acquisition time ; how each part of the monitoring data sharing with each other. It is widely shopworn in application solutions in storage technology ? ( Eg : das, nas, ipsan and fcsan , etc. ) , whether it be directly used in stability monitoring system it art depository technology integration and monitoring system can take into account ? Features video surveillance data stream ( flood ) visit, if unchangeable reasonably tailored to the characteristics of the stream entry security monitoring , the cost would be more reasonable . Development of security video track has been a focus from the industry , but also the key point of information storage issues restricting the development of security video surveillance , the current generation of storage technology can meet the sanctuary monitoring regime for the future security of data needed for inspectorial , monitoring can be solved data is reliable, complete , shared storage problems.
Security video surveillance through three stages , and the data storage problems also limit the development of answer security video surveillance . Of course, by today’s arcade technology , the status quo or to colloquium security monitoring system . However, we still need better storage technology that allows data more complete plus convenient for storage. Cloud storage technology in the field regarding security features , including : first , monitoring cloud storage will be more control of video surveillance hosting service , providing consumers with a private cloud service for small -scale deployments , such as family , shops ; second , cloud security services will be provided by the independent custom enterprise cloud liturgy provider ‘s infrastructure needs , services, software et cetera hardware resources ; third, the data center model will be introduced and gradually become the mainstream form of security pursuit . Storage management tin be automated cloud storage and intelligent , all storage resources are integrated together , customers see a single storage lebensraum ; improves storage efficiency through virtualization technology to solve the waste of storage space , you can automatically reallocate data , improve the utilization of repository space , along including load balancing, fault tolerance capabilities ; cloud storage to achieve economies of scale and flexibility expand , reduce operating costs and avoid wasting resources. Subject to the security video lookout own business characteristics , monitoring cloud storage and cloud computing models have an surviving Internet distinction, such as security users tend to store video information in the vicinage government more sensitive video surveillance applications , video information privacy issues , video greater monitoring of the network bandwidth consumption and other issues .
With the development of digital surveillance technology and popularization of storage devices gradually toward the center from the marginalized position monitoring system , the part of the monitoring network and also with the upgrading of the significant appreciate in centralization . Still , the characteristics about non-standardized security market determines the diverse characteristics stored in the spying field , roughly speaking, the market is currently monitoring the presence of the following storage technologies : DVR storage , encoders direct-attached storage , centralized storage , NVR storage. This in handful ways is currently monitoring applications else categories , and their applications have played an irreplaceable role . Store surveillance permitted develop towards two areas , one for the node is not too small and medium applications , NVR is the next predominant development direction ; followed by large-scale surveillance systems, video management platform SAN storage ( with ISCSI storage -based ) is still a priority choice for large surveillance systems.