Storage virtualization device, data storage method and system

Abstract

Provided are a storage virtualization device and a data storage method and system. The storage virtualization device includes: a logic storage unit module for performing RAID group division on at least two solid memories to form at least one logic storage unit; a resource block module for performing striping processing on the logic storage unit to form a storage resource block corresponding to each stripe of the logic storage unit respectively; a mapping module for receiving a write request message sent by a host and acquiring a logic block number for writing data to be written according to the logic address carried in the write request message, acquiring an idle storage resource block, calculating a physical block number of the acquired idle storage resource block, establishing a mapping relationship between the logic block number and the physical block number; and a data write module for writing to a corresponding storage space of the physical block number the data to be written according to the mapping relationship. The storage virtualization device and the data storage method and system can improve the utilization rate of the 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 because of 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 achiev...

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 users is idle, so that the physical storage space cannot be effectively used, and the storage space cannot be maximized. Take advantage of the performance advantages of solid-state storage

Images