Method and device of reconstructing and optimizing data in solid-state drive

Abstract

The invention discloses a method of reconstructing and optimizing data in a solid-state drive; the method comprises: in reading the solid-state drive, if a reading anomaly occurs, detecting state parameters recorded in the solid-state drive, judging fault type of the reading anomaly; selecting from a preset sequence group, a characteristic sequence corresponding to the fault type; adjusting reading voltages sequentially according to configuration parameters in the characteristic sequence, wherein reading is executed after each adjustment; if reading is successful, returning reading results, repeating the reading operation if reading fails until all characteristic sequences are executed, and returning reading results. Reasons of the reading anomaly are analyzed and counted, the fault type is judged via a corresponding detection method, the characteristic sequences corresponding to the fault type are adjusted specifically, the optimizing process is simplified, and accuracy and efficiency are improved. The invention also discloses a device of reconstructing and optimizing data in a solid-state drive.

Description

technical field [0001] The invention relates to the field of storage devices, in particular to a method for optimizing data reconstruction in a solid-state hard disk. The invention also relates to a device for data reconstruction optimization in the solid-state hard disk. Background technique [0002] With the development and wide application of technologies such as the Internet, cloud computing, and the Internet of Things, in human life, massive data needs to be processed and stored all the time. The rapid development of information technology puts higher demands on the performance of storage systems. Require. Solid-state disks (solid-state disks, SSDs) are widely used in the field of storage devices because of their fast read and write speeds and low energy consumption. Except for the main control chip and the cache chip on the SSD, most of the rest are NAND Flash (storage flash memory) flash memory chips. [0003] However, after a period of use of the solid state drive...

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Problems solved by technology

[0003] However, after a period of use of the solid state drive, the NAND-based material will be unstable due to long-term reading and writing or not using a certain area, causing the stored charge to be unstable and abnormal reading data. At this time, it is necessary to adjust the read voltage value to regain the user data

[0004] The method of adjusting the read voltage value in the prior art is that when the data in the NAND is read abnormally, it is necessary to try the sequence characteristic value one by one, without distinguishing different situations caused by different reasons, so the pertinence is poor, resulting in limited accuracy and efficiency of successful data reconstruction. Low

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