Method and device for predicting service life of solid state disk and readable storage medium

Abstract

The invention discloses a method and device for predicting the service life of a solid state disk and a readable storage medium, and the method comprises the steps: obtaining health information of each flash memory block in the solid state disk and the number of currently available flash memory blocks, wherein the available flash memory blocks are flash memory blocks used for storing to-be-written data; calculating a corresponding flash memory health value by utilizing the health information of each flash memory block, and calculating a quantity health value by utilizing the quantity of the current available flash memory blocks; and predicting the service life of the solid state disk by using the quantity health value and all flash memory health values to obtain the residual service life of the solid state disk. In this way, the remaining life of the solid state disk can be accurately estimated.

Description

technical field [0001] The present application relates to the field of storage technology, and in particular to a method, device and readable storage medium for predicting the service life of a solid-state hard disk. Background technique [0002] The service life of solid-state hard drives is mainly determined by the flash memory (flash) particles. Since the number of wear and tear of flash memory particles is limited, as the number of erasing and writing of flash memory blocks increases, the number of bits flipped in each page (page) will also increase. Increase, when the number of bits flipped exceeds the error correction capability of the SSD, an error will be reported, and the current block will become a bad block. [0003] For the estimation of the service life of solid-state hard drives, the current practice is generally: to count the number of erasures or the amount of data written in the flash memory block, and compare them with the nominal value to obtain the estima...

AI Technical Summary

Problems solved by technology

[0003] For the estimation of the service life of solid-state hard drives, the current practice is generally: to count the number of erasures or the amount of data written in the flash memory block, and compare them with the nominal value to obtain the estimated service life. This method is not accurate enough because The situation of different flash memory blocks is different. It is possible that the number of bit flips of the flash memory block with more erasing and writing times is lower than that of the flash memory block with fewer erasing and writing times, so there may be such a situation: the self-test of the solid state drive The service life of statistics in Self-Monitoring Analysis And Reporting Technology (SMART) information is still remaining, but the solid-state disk is no longer available, or the service life of statistics in SMART information has been used up, but the bits of the flash memory block are flipped Still less, still able to continue to operate safely

Moreover, the lifespan of a solid-state drive is also related to the number of flash memory blocks. If the number of bad blocks continues to increase, the number of available flash memory blocks is not enough to maintain normal operation, and the life of the solid-state drive will end prematurely. Therefore, an accurate estimate is required Methods of Remaining Life of Solid State Drives

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