[technical knowledge] cloud storage core technology

Storage virtualization technology is the core technology of cloud storage. Through the storage virtualization method, different vendors, different models, different communication technologies, and different types of storage devices are interconnected to map various heterogeneous storage devices in the system into a unified storage resource pool.
Deduplication technology
With the increasing amount of data in the data being duplicated, duplicated data will take up more space. Deduplication technology is a very advanced data reduction technology that can greatly reduce the amount of backup data. It is commonly used in disk-based backup systems to remove redundant files, blocks, or bytes by deleting operations. Ensure that only a single data is stored in the system.
Distributed Storage Technology
Distributed storage uses the storage space on each storage device provided by the service provider through the network, and forms these distributed storage resources into a virtual storage device, and the data is dispersedly stored on each storage device. The main technologies involved are network storage technology, distributed file system and grid storage technology. These technologies are used to realize the cooperation of different storage devices, different applications, and different services in cloud storage.
Data backup technology
Data backup technology is to save the data itself or parts of it in a specific format at a certain time, so that when the original data is wrong, accidentally deleted, maliciously encrypted, or other reasons are not available, the data can be quickly and accurately. Techniques for recovery.
Content Delivery Network Technology
The content distribution network is a new type of network construction mode, and it is mainly aimed at transforming the existing Internet. The basic idea is to try to avoid the drawbacks of the Internet, such as small network bandwidth, uneven distribution of outlets, and large user traffic, which affect the data transmission speed and stability, so that the data transmission is faster and more stable. By placing node servers throughout the network, a layer of intelligent virtual networks is formed on the basis of the existing Internet, and the user's information is based on information such as network traffic, connection and load status of each node, response time, and distance to the user in real time. The request is redirected to the service node closest to the user.
Storage encryption technology
Storage encryption refers to data encryption from the front-end server or encryption of data before being written into the storage device to ensure that only data stored on the storage device can be read by authorized users.

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