Monitoring a variety of intelligent storage technology prospects and how?

In the field of video surveillance, with the advent of high-definition large-scale integrated platform with front camera, video surveillance applications are constantly arising Massive amounts of data. Currently a major Safe City project, the data generated every day can reach 1PB, as well as the characteristics of the rapid growth of data, including data bayonet through the car, face capture data, alarm data, and so on. Especially in large public security monitoring project, many kinds of data, the amount of data PB level (mainly low value-density video data), fast data processing needs updating, especially those with massive industry characteristics Data, how to achieve safe, reliable storage, and has been effectively managed? Let's take a look at related technologies.

The main field of video surveillance storage technology

Monitoring of storage technology for the development process through the array from a single tape, disk, disk-to-storage network systems. The intelligent storage Important turning point lies in the emergence of RAID disk arrays. In the IP-SAN, storage became an independent computer system, including equipment, software, networks, has solved interoperability, extension, technology upgrades, Component availability and data security intelligence, especially for backup data recovery, expansion, disaster recovery.

At present, several storage methods are: local storage, direct attached storage, network storage.

1 local store:

DVR storage is the most common form of local storage mode, the codec device directly attached hard disk; directly with up to eight hard drives. Due to limitations codec equipment performance, generally use hard disk sequential write mode, no application of RAID redundancy technology to achieve data protection.

In fact, with the improvement of flash memory technology in miniature video surveillance application needs local storage technology did not reduce, but increased. And although the title has not appropriate DVR, but the basic technical architecture, and not much has changed. So actually stored in the DVR will become large-scale video surveillance projects in a front-end technology or become built-in features front-end camera equipment.

(2) direct-attached storage:

Usually DAS, JBOD, RAID, mainly uses SATA, USB, SAS and other storage protocol extension stored in this way is suitable for small-scale deployments, especially when the external RAID, video surveillance data on the reliability of a certain guarantee, while data written directly obvious.

Which needs to be mentioned in the NAS, security video surveillance in the corresponding NVR system. This system will be on the NVR via the network interface, in the form of IP packets transmitted over the network. This technique is actually a direct transition between storage and network storage company, but also tend to make direct-attached storage and IP networks combined. On the definition or can be called IP-DAS.

Storing the difference between the directly connected network is that the network is stored as a separate storage unit.

3 network storage:

SAN (Storage Area Network, Storage Area Network) is a storage device, connect the device to a high-speed network interface is integrated in the art. Centralized management of storage server connection using the front-end codec, via streaming Association Yee download the data, and then stored on the storage device. Can be connected via SAS, iSCSI, NAS, FC protocol between servers and storage devices. This centralized storage platform suitable for medium to large deployments.

CVR (Central Video Recorder, center-class network storage devices video) by standard IPSAN / NAS network storage device with a video surveillance applications evolved. CVR is a blend of technical and professional security professional storage Anti-technology products for video surveillance applications. It is a direct-attached storage and network storage are combined and biased in favor of a form of network storage.

Popular in the industry, "cloud storage" concept, in fact, is built on the SAN storage networks and IP WAN combine so as "telecommunications" Large communications service providers and the like, or the deployment of a large storage network service provider for small and medium users of video surveillance, video surveillance provide convenient storage services. Performance in the form of terminal operations, is to store that served Services, SaaS (storage as a service) approach to service.

Cloud storage biggest problem is that a business user is more interested in the important and sensitive information in their own hands, that is, private cloud storage and security can not be recognized. On the other hand is to limit communication technology, long wait times and limited bandwidth users often can not be tolerated.

Application of intelligent storage in the field of video surveillance

With the popularity of digital video surveillance, storage from marginalized position monitoring system gradually toward the center and rear, the proportion of the monitoring system along with high-definition, centralized ascension to a substantial increase.

In the era of big data, especially in large-scale video surveillance systems storage solutions, the amount of data that video content is massive, and how the massive number It is effective in obtaining the contents, not just rely on manpower is difficult, it is costly. The value of the massive video data content is sometimes very high. Thus effectively retrieve the content, that content is stored intelligent tube Li has become an urgent demand for the video surveillance market.

1. What intelligent storage?

Intelligent storage concept author ADIC (Advanced Digital Information Corporation USA) is the definition of intelligent storage: more flexible, efficient and reliable way to protect, manage, and access to the growing business-critical data.

Intelligent Storage is recognized as the core concept is transparent to applications and users, the biggest advantage is the protection of security, management and easy operation, I / O performance and efficient. The three main ways to achieve these goals lies in the centralized storage, digitization, systematic. Intelligent video surveillance storage which, in essence, is a content-based intelligent storage.

2 Intelligent Storage Technology Storage Management

On the content storage management costs because of the different costs of storage media, through hierarchical storage management techniques, different types of content stored on different storage media can not only improve query efficiency valid data, while also significantly reducing equipment storage system costs.

Intelligent hierarchical storage management (HSM) is a high-speed, high-capacity non-line storage devices (such as large-capacity tape library) as a hard drive to the next level Equipment commonly used in the hard disk and then automatically migrate data to the specified policy on large-capacity tape libraries and other secondary storage devices. When you need to use these data, hierarchical storage system will automatically level the data from the storage device Transferred back to the hard disk. Simply put, data migration is a way to put a lot less frequently accessed "cold data" stored in the library, the library and other offline media, save a small amount of "hot data" technology only on RAID. When that These data are stored on magnetic tape media is accessed, the system automatically move back to these data in RAID; Similarly, RAID in a long time have not been accessed data is automatically migrated to tape media, thus greatly reducing Low investment and management costs.

Intelligent hierarchical storage management technology is an intelligent storage technology in the content management, as well as the storage medium of automatic identification technology, automatic monitoring technology to read and write records ...... enhance the user transparent in every detail of the storage system is intelligent storage requirements. And how to achieve this goal, the agreement to be compatible with the storage management software is designed to fully consider the characteristics of user demand for content.

3. The key is stored in the intelligent software

For users, the data migration operations are completely transparent. Users may feel a little slower to access the hard drive, but will obviously feel its logical hard drive capacity is greatly improved. Compared with the traditional data management mode, using this technology solutions have the advantage is obvious.

Summary

Storage is an important part of the video surveillance system on technological innovation often lagging behind. Relative to the high-definition front camera is upgraded immediate effect, but not attractive, intelligent storage eye. However, the video surveillance system as a whole, high-definition video images if not intelligent storage support, just as "castles in the air" is unrealistic.