Security industry common storage classification

The storage systems actually encountered in the security industry are diverse and can be roughly divided into traditional storage, IT cloud storage, general cloud storage, and security cloud storage.

Traditional storage is mainly implemented in the IP+/NAS and NVR/CVR converged service layers to implement the N+0 mode. The mode of the disk expansion enclosure behind the IPSAN provides the reliability of the disk-level raid level in a single machine. The service system must be mounted separately, which is complicated to use and has poor fault tolerance. The N+0 of the NVR/CVR is still writable when the single-machine fault is implemented in the service layer. If it is not known, the cloud storage concept will be guaranteed, but it still cannot solve a series of problems such as storage failure and elastic expansion.

IT cloud storage mainly refers to IT vendors' breakthroughs in traditional IPSAN/NAS, providing NAS cluster/distributed block storage. More is to provide block devices for databases and virtual machines as a general IT application scenario. Enterprise applications provide permissions and file read and write by directory space management.

Universal cloud storage mainly refers to a general-purpose distributed storage system that provides a write-and-read capability according to a common interface, and is open to general-purpose big data components, and can be used as an underlying storage system. Mainly S3 form object storage and HDFS class file system, the difference in operation semantics between the two is that one is operated according to the object mode, and the other is operated in a similar traditional file system mode (class posix semantic but non-standard).

Security cloud storage is a pointer to deepen the design of video image business scenarios in the security industry. File storage systems based on distributed architecture can provide object semantics or file semantics. With high concurrent writing, high storage utilization, high reliability storage, etc., it supports functions such as writing and reading, multi-network video, image processing, file locking, etc., to meet the 7x24-hour uninterrupted application requirements of security business scenarios.

Dahua's video cloud storage is a highly reliable storage product and service for complex business scenarios in the security field. Supports object management and semantics to support file stream reading and writing. It combines bucket management and file system file stream reading with object storage system. The advantages of writing enable massive file management and simple and easy-to-understand file operation mode. For business layer users, it is simple to use and more friendly to support real-time playback of recordings by writing and reading modes. As a cloud storage in the security industry, the distributed architecture supports massive data storage and high-concurrency read and write. It considers the IO difference, the cost per TB, the actual network environment, and the in-depth understanding of the business scenario to achieve the linkage of the upper video image service. End optimization. At the beginning of the design, Dahua Video Cloud Storage solves the problems encountered in complex business scenarios from the perspective of cloud storage system framework, underlying technical details, product optimization, and solution-level design. Bring real value. (Author: Jiang Wenlong)