Solid state disk controller device and solid state disk data verification method

Abstract

The invention provides a solid state disk controller device and a solid state disk data verification method. The solid state disk data verification method comprises the steps that a controller monitors the bit error digit of an effective information region of a solid state disk in the operation process of the solid state disk; the length of an effective information region mapped by an ECC region is reduced by a preset step length whenever the controller determines that the bit error bit number reaches an error-correctable bit number threshold corresponding to a preset ECC algorithm; and the controller displaces the effective information area data according to the length of the effective information area mapped by each reduced ECC area, newly adds the ECC area, and recalculates the check value of each ECC area. By reducing the length of the effective information area, the solid state disk data verification method improves the ECC error correction capability, and prolongs the service life of the solid state disk.

Description

technical field [0001] The present invention relates to the technical field of computers, in particular to a controller device of a solid-state hard disk and a method for verifying data of the solid-state hard disk. Background technique [0002] Due to its high-speed read and write performance and low failure rate, solid-state drives are gradually replacing mechanical hard drives and becoming mainstream storage devices. Solid-state drives mainly use the Error Correcting Code (ECC) module to correct errors in stored data. As the use of solid-state drives increases, the error rate of stored data gradually increases. When the number of error bits exceeds the ECC correction When there is an error, an uncorrectable error will occur, and the solid-state drive cannot be used any longer. [0003] Chinese patent CN105280239B discloses a method for dynamically realizing the ECC check code of a solid-state hard disk. The multi-level ECC check code rate is preset for the solid-state ha...

AI Technical Summary

Problems solved by technology

However, very high requirements are put forward for the controller of the solid-state hard disk, especially for the content of the ECC module in the form of firmware, the implementation logic should not be too complicated, and the hardware overhead of the multi-level check code is very large. If the implementation of the Chinese patent CN105280239B provides method, requiring complex modifications to the controller

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