Storage virtualization device, data storage method and system

Abstract

The embodiment of the invention discloses a storage virtualization device, a data storage method and a system. The storage virtualization device comprises a logic storage unit module, a resource block module, a mapping module and a data write-in module, wherein the logic storage unit module is used for carrying out RIAD(Redundant Array of Inexpensive Disks) partitioning to at least two solid-state memories so as to form at least one logic memory unit; the resource block module is used for striping treatment to the logic memory unit so as to form storage resource blocks respectively corresponding to the strips of the logic memory unit; the mapping module is used for receiving write request messages sent out by a host machine, obtaining logic blocks for writing to-be-written date according to logic addresses carried in the write request messages, acquiring idle storage resource blocks, calculating the numbers of physical blocks of the acquired idle storage resource blocks, and building a mapping relationship between the logical blocks and the physical blocks; and the data write-in module is used for writing to-be written date into corresponding storage spaces of the physical blocks according to the mapping relationship. The storage virtualization device, the data storage method and the system can improve the use ratio of physical storage space.

Description

technical field [0001] The invention relates to data storage technology, in particular to a storage virtualization device, data storage method and system, and belongs to the field of storage technology. Background technique [0002] NAND Flash (NAND Flash) memory has been more and more widely used due to its advantages of large capacity and fast rewriting speed, which correspondingly promotes the rapid development of solid-state memory. At present, solid-state storage can be mainly divided into two categories, one is small-size solid-state storage, including memory cards, 1.0-3.5″ solid-state storage; the other is large-size solid-state storage, including high-speed peripheral interconnect bus (PCIE) cards and Rack-type array. Rack-type array includes two types of open architecture and closed architecture. The open architecture is similar to the traditional array with dual controllers, built-in standard solid-state memory, and software and hardware optimization to achieve hi...

AI Technical Summary

Problems solved by technology

Therefore, the storage space is isolated due to different users. In this case, there may be situations where the storage space of some users is too small and the storage space of other us

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