NVR Cloud Storage solution was the mainstream

Video surveillance as an important basis for verification, in the banking, judicial, safe City application is very wide, and with the development of technology and the needs of the times, many places are installed high-definition cameras. The data in these places need to be stored for 1-3 months or even more than half a year. The advent of the era of high-definition, not only requires the High-definition camera, its storage screen also has the requirements of HD, which is the storage technology has put forward a great challenge.

Storage requirements for HD monitoring

According to the modern security monitoring of storage requirements can be summed up as a simple "five high":

High capacity: High-definition storage capacity surge, need stable and reliable mass storage: improve the capacity of a single system: through the SAS expansion Cascade multiple JBOD, support 3TB, 4TB hard drive, enhance raid robustness; Use cluster storage system: Enhance the flexibility of storage system to expand capacity, to make up for the lack of reliability of stand-alone machines;

High-performance: HD Monitoring for storage total bandwidth requirements higher, and storage performance according to the monitoring characteristics of the tuning: Performance optimization: High-definition large-stream data stream, in different modes (edge write Edge read, edge Delete write, RAID reconstruction) IO performance optimization, NAS performance optimization; Application combination: NVR software embedded application processing ability, reasonable allocation of system resources;

Energy efficiency: Behind the massive storage deployment is a large amount of energy consumption, high cost of use, monitoring equipment should be low-power design: In the DVR era, monitoring vendors through hard disk shift to reduce power consumption, prolong life, while networked storage can use maid to achieve energy saving, but maid more suitable for backup archiving environment; Considering the monitoring application is 7*24 uninterrupted, choose high conversion efficiency of the power supply (80Plus power supply or DC power) more valuable, can not affect the application of the situation to reduce energy consumption;

High-density: Monitoring the most basic requirements for storage is to reduce the cost per TB, cost per slot: After the popularity of HD monitoring, the original 3U16 disk-level equipment, a single storage capacity is limited, high disk bit storage can support more cameras; 4u24 disk more than high-density storage, can effectively reduce the cost per slot, improve the single storage capacity, Save rack space;

High application: Storage must be designed to monitor the actual needs to solve the customer pain point to survive: Too much file fragmentation results in performance degradation, file system loss after power outages, streaming media direct writing, efficient indexing structure, improve the convenience and compatibility of NVR embedding applications, support Windows/linux software, Provide the interface with the external monitoring subsystem API, to achieve efficient analysis, rapid positioning in the massive data; taking Uit sv1000g2 as an example, the product design runs through the "5 high", using end-to-end SAS6GB technology, Intel's latest Sandybridge platform to improve performance, 4U24/4U36 high-density design, support 3TB hard disk, improve the storage capacity of a single system, reduce the cost per slot, the application of conversion efficiency of up to 90% 80Plus power supply, can save more power, reduce system operating costs, through the architecture optimization can be more closely integrated with the monitoring system.

NVR Cloud Storage solution was the mainstream

NVR as an integrated network video equipment, its collection of video collection, preview and forwarding, storage, file system management and retrieval, playback and other functions in a variety of network video surveillance system has been widely used. In the video surveillance High-definition, networking, and even intelligent trend, NVR storage scheme first considered the cloud architecture of the storage scheme, the industry has been affirmed.

2NVR Cloud Storage solution was the mainstream

The video monitoring cloud architecture will provide the system with cluster applications between devices, grid computing and Distributed file system functions, the network of various types of storage devices through the application of software together to work together to provide data storage and business access functions, in this framework, NVR will further enhance the scope of its application , will be the storage node under the cloud architecture, will also become the compute node, realizes more intelligent application.

In this idea of cloud storage, each NVR video data is stored with each other, which is not only to ensure the high efficiency of concurrent read and write, but also to ensure the security and reliability of the stored data. This efficient and reliable, in the future will also subvert the traditional monitoring industry business model, by operators to invest in building monitoring systems, and then to provide users with cloud monitoring services, specific video monitoring cloud services may have the following three modes:

Platform Leasing: Operators deploy NVR in different places, build a cloud monitoring and management platform based on NVR, the client only rents operators cloud monitor service platform and Internet access bandwidth, realizes remote image monitoring of Wideband network, realizes real-time image preview, Cloud mirror control, historical image query and remote equipment management, etc.

Space Leasing: Operators to deploy NVR in different places, build a management platform based on NVR, the storage space provided by the customer leasing operators, realize the storage function of digital image;

Equipment Leasing: A complete set of equipment, such as cameras, platforms, storage space, etc.

At the same time, High-definition NVR with other professional it storage equipment, in the direction of energy-saving, low-power trends, in addition to the equipment itself energy-saving design, but also increase the storage of maid applications, so that the non-read-write disk in a non working state, reduce power consumption, at the same time by optimizing Reduce or reduce the configuration of hardware devices in the system to conserve energy.

The difficulty of HD monitoring data storage

Although there are NVR cloud storage solutions, but in practice, the market demand is changeable, DVR, NVR, sdi-dvr and Fcsan, Ipsan and other storage solutions coexist, each has characteristics, but also difficult to meet all the needs. On the one hand from the video monitoring data pressure, on the one hand, storage technology is still need to improve the province.

3 HD monitoring data storage challenges

These two years, High-definition has become a security monitoring application in the fire of the mainstream technology. In fact, to talk about why HD can achieve such a high sensation, in addition to bring us a higher level, more breakthroughs in the video display effect, it "far-reaching" influence, I am afraid also forced the market to the HD monitoring to devote more energy. From the most basic front-end camera, to the transmission process of the cable, network environment, compression efficiency, and then to the back-end of the monitoring display, and storage capacity, have become an important factor in the casting of high-definition, and in such cases, HD's hot attention is not surprising. Among the factors mentioned above, the storage link is undoubtedly one of the areas that we have been most concerned about in the past two years. As a security video management system information of the final distribution center, storage pressure in the past two years, as the system needs to upgrade and become difficult to cap. Especially when the traditional storage mode encountered today's explosive information development, it in the application process, how many also appear to be somewhat powerless.

1, the traditional storage difficult capacity

In the framework of our traditional monitoring system, the front-end equipment is basically used to complete the structure mode of DVR. In the system, the video surveillance image information is stored in the DVR, or through the DVS discrete in the monitoring control side of the computer hard disk. However, this collocation mode should not say that the HD monitoring, I am afraid that the face of the current All-weather SD monitoring, will also be a bit after a period of difficulty, not to mention that the HD to temporarily be called a huge amount of information. In addition, for the traditional centralized hard disk management, will often put all the video data set in a storage hard drive, although such a management model may give us data transfer, or management to bring certain convenience. But in the data security, I am afraid that will face a very small crisis. Because the current hard disk protection capacity is not at a high level, so when the hard disk damage, or operating system failure, the management of the data will probably be lost.

2. Shortage of storage space

Previously, many units of the security Department for video monitoring of the storage information time has a clear stipulation, basically in 1-3 months time. And for some more important moments or video data, it may be saved for six months. However, as high-definition video began to emerge more and more, there was a rapid rise in the demand for back-end storage, in which case the growth of two to three times times the amount of data was destined to bring unexpected pressure on traditional PC hard drive management, or local DVR mode. In such a situation, either expand the storage capacity of the system, or reduce the storage resolution, but in such cases, the result is to cost or stored video quality as their ultimate cost.

3, the number of hard disk has been difficult to solve the resource trap

In addition to the micro-security and storage, when we from the overall construction of the system to analyze, but also exposed the equipment is difficult to be compatible and other factors reflected in the dilemma. Because the large-scale monitoring system is often the installment construction, the construction process uses the equipment not to be consistent, therefore in the final application, this kind of various brand, the model equipment to the monitoring centralized management brings the very big difficulty. At the same time, the traditional DVR or DVS equipment, due to the limited ability of network transmission, it is difficult to form a unified storage, unified monitoring of the central system structure, so that the security monitoring of enterprises to store data to find trouble, scheduling is not timely, video storage and other problems caused by scattered.

4 Matching technology will save HD storage

4, supporting technology will save HD storage

In fact, the storage dilemma brought by HD monitoring, although we have proposed to work together with a variety of storage devices, or to reduce the content of information, and other ways to reduce storage-side pressure. But at the root, it's all part of a temporary expedient. If you want to completely solve the problem of storage pressure, to find with high-definition application of the matching technology, is still an indispensable choice.

5, compression technology or to achieve the front-end "river closure"

Today, both transmission and storage requirements, compression coding has become an important way to ensure the smooth high-definition monitoring.

From our previous data, we can see that if we upgrade the encoding format from MJPEG to H.264 in the application, our storage side can save more than 50% of the storage space directly. Because of this, more and more end users begin to upgrade the data format from MJPEG, MPEG-4 to H.264, so that compressed video takes up less space while maintaining the same video quality as MPEG-4. Although the H.264 in the fixed picture compression ability, slightly lacks in the former, but this does not hinder the user to H.264 the pursuit.

How cloud storage technology solves storage problems

Obviously, the difficulty of solving HD storage is not a camera problem, how to solve the problem, cloud technology is still the main solution.

1, the network is expected to a solution of HD's Sleepy

At the beginning of this year, h.265 's wind once again drew attention to the relationship between compression and HD. Since h.265 is a new standard for video coding following H.264. The former is technically, around the existing video coding standard H.264, on the basis of retaining some of the original mature technology, some other technology to improve. For example, it has high performance in improving compression efficiency, improving robustness and error recovery capability, reducing real-time delay, reducing channel acquisition time, random access delay, and reducing complexity. Therefore, this for HD processing, is undoubtedly more targeted.

2, Cloud technology will provide back-end "dredge"

After the end of the "closure", we say that the storage backend can bring us changes. In the past two years, the application of cloud technology has made us more and more aware of this promising technology. Conceptually, this is a new technology by means of Internet of things, which integrates the storage space in the network effectively, on demand, so that the storage information in the entire network to find a more extensive storage space.

Although in the current technology, the use of cloud technology to achieve the full coverage of the monitoring system has some difficulties. However, this is not due to the shortcomings of the cloud technology, but is not yet fully achieved the required popularity. As a result, cloud computing's easing of storage pressures has been seen as an effective tool for the future.