Equivalent residence time recovery method and device, storage medium and electronic equipment

Abstract

The invention relates to the technical field of data storage, and provides an equivalent residence time recovery method and device, a storage medium and electronic equipment, and the method comprises the steps: obtaining an equivalent residence time compensation value during a fault when a first memory with a fault recovers to work; correcting the equivalent residence time compensation value by adopting a preset correction strategy to obtain a corresponding correction value set; predicting an optimal judgment level of a target storage unit in the first memory by adopting each correction value in the correction value set, and calculating a bit error rate when the optimal judgment level corresponding to each correction value is adopted to perform data reading; and selecting the correction value with the minimum corresponding bit error rate as the optimal equivalent residence time compensation value, so as to recover the equivalent residence time of each storage unit in the memory. According to the invention, the equivalent residence time during the fault period of the memory can be accurately recovered, and the original bit error rate is reduced while the reading speed of the memory is improved.

Description

technical field [0001] The present invention relates to the technical field of data storage, and in particular, to a method, device, storage medium and electronic device for restoring equivalent residence time. Background technique [0002] With the continuous improvement of the global Internet level, the global demand for data storage is also increasing. Currently, the mainstream storage devices of computer servers are mainly divided into two types: Hard Disk (HD) and Solid State Drive (SSD). Both solid-state drives and mechanical hard drives are essentially hardware for data storage, and their essential difference lies in their different storage media. The traditional mechanical hard disk uses the mechanical disk as the storage medium, and stores and reads data through the mechanical structure between the magnetic arm, the magnetic head, and the disk; while the solid-state hard disk uses NAND flash memory (non-volatile memory) as the storage medium. Data is read and writ...

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Problems solved by technology

In the process of realizing the present invention, the inventors found that the above-mentioned existing implementation methods have at least the following defects. In the above-mentioned first method, when the memory unit is powered on and restored and no data writing action occurs in the current storage unit, it is impossible to obtain an accurate equivalent resident Therefore, only the default level can be used to read data, resulting in high RBER and affecting the efficiency of reading data; in the second method above, if the ambient temperature fluctuates greatly during the power-off period of the memory, it will lead to compensation using this method The error of the equivalent dwell time is relatively large, resulting in inaccurate prediction of the decision level

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