A method for reducing wear and tear of solid-state disks through programming error perception

Abstract

The invention discloses a method for reducing solid-state-disc abrasion through a programming-error perception, and belongs to the field of computer storage. With improvement of the storage density of a solid-state disc, the durability of the solid-state disc is reduced. An abrasion balance method is used for improving the durability of the solid-state disc, and in the traditional method, the programming / erasing time number and the bit error rate are used as optimizing indexes, different blocks of a same flash memory chip in the solid-state disc have the large difference in the durability aspect, and therefore the states of flash memory blocks of the solid-state disc cannot be accurately forecasted with the abrasion balance method that physical characteristics of the solid-state disc are not differentiated. For adapting the physical characteristics of the solid-state disc, the programming error rate is used as the optimizing index, can be evenly distributed on the different flash memory blocks, and unbalanced erasure operation is thus avoided. By means of the method for reducing solid-state-disc abrasion through the programming-error perception, the service life of the solid-state disc can be effectively prolonged, and the durability of the solid-state disc is improved.

Description

technical field [0001] The invention belongs to the field of computer storage, and more particularly relates to a method for reducing wear of a solid-state disk through programming error perception. Background technique [0002] The storage system is an important part of the computer system. The solid-state disk based on NAND flash memory has the characteristics of non-volatility, shock resistance, low read and write delay, low power consumption, and small size, so it has attracted the attention of data centers. However, solid-state disks also have defects: their erasing times are limited, and if the same flash memory block is accessed continuously, the flash memory block will be worn out quickly, thereby reducing the reliability of the solid-state disk and eventually making it unusable. [0003] In view of this, various wear leveling methods are currently widely used in solid-state disks. The purpose is to evenly distribute the erasing operations of flash memory blocks thro...

AI Technical Summary

Problems solved by technology

[0005] Aiming at the above defects or improvement needs of the prior art, the present invention provides a method for reducing wear and tear of solid-state disks through programming error perception. Durability, so as to solve the technical problem that the existing wear leveling method cannot accurately predict the usage status of the flash memory block of the solid state disk because it does not distinguish the physical characteristics of the solid state disk

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