Storage device and control method and apparatus thereof

Abstract

The embodiment of the invention discloses a storage device and a control method and apparatus thereof. The storage device comprises a storage module, the storage module comprises a plurality of physical blocks and an event queue, and the control method comprises the following steps: if detecting that the erasure frequency of the physical blocks is greater than or equal to a first erasure threshold, adding a wear balance operation into the event queue; and in the operation blank stage, if detecting that the wear balance operation exists in the event queue, executing the wear balance operation.In the embodiment of the invention, the method of executing the wear balance operation in the background is adopted, so that the wear balance operation and the read-write-erase operation command of the storage device cannot be carried out simultaneously, the erase time of a user cannot be occupied, and after the user finishes the normal read-write-erase operation, the control device finishes all the wear balance operations through automatic detection and processing; and the user operation waiting time is reduced, and the system performance of the storage device is improved.

Description

technical field [0001] Embodiments of the present invention relate to storage technologies, and in particular, to a storage device and a control method and device thereof. Background technique [0002] Wear leveling Wear leveling is one of the FTL algorithms of the flash translation layer that most SSD products will implement. Its core idea is to balance the erasing times of all physical blocks on the device side. [0003] Wear leveling Wear leveling includes dynamic wear leveling Dynamic wear leveling. The existing dynamic wear leveling technology is completed during the user's erasing or writing operation. For example, when the user performs an erasing operation, the address of the physical block corresponding to the erasing operation is obtained according to the mapping table, and it is judged whether the number of erasing times of the physical block is greater than a given threshold. If this condition is met, Dynamic wear leveling is triggered. [0004] However, wear...

AI Technical Summary

Problems solved by technology

[0004] However, wear leveling involves the movement of data and the erasure of physical blocks, which will take up the user's read and write operation time, resulting in longer waiting time and reduced system performance.

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