Data access method, device and system for cloud storage
A data access and cloud storage technology, applied in the field of cloud storage, can solve problems such as unfavorable data security and privacy protection, limited data archiving and return speed, and allocable bandwidth, so as to enhance data security and improve access Effects on performance, saving storage space, and cloud transfer bandwidth
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[0044] In order to make the objectives, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention, but not to limit the present invention.
[0045] In the embodiment of the present invention, a file to be stored is converted into a set of data blocks to form a physical part of the file, and the logical part of the file formed by restoring the physical part to the information of the file is saved, and the physical part is transmitted to multiple cloud storage data centers for storage at the same time. The storage location information of each data block of the physical part in the cloud storage data center is saved to the logical part; the logical part of the file is obtained when the file is retrieved, and the physical part of th...
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