Method and device for predicting hard disk sub-health index based on SMART (self-monitoring analysis and reporting technology)

Abstract

The invention provides a method and device for predicting the hard disk sub-health index based on SMART (self-monitoring analysis and reporting technology). The method comprises the following steps: monitoring the SMART parameters of a hard disk, wherein the SMART parameters include a redistribution sector parameter, a current to-be-mapped sector parameter, an error-irrecoverable parameter and an instruction timeout parameter; judging whether the hard disk experiences abnormal state according to the monitored value of each parameter in the SMART parameters; if so, adjusting the health index value of the hard disk according to the monitored value of each parameter in the SMART parameters; and determining the current health state of the hard disk according to the current health index value of the hard disk. Through the method and device, the health state of the hard disk can be effectively estimated when the hard disk experiences abnormal state so as to provide accurate reference data to the user.

Description

technical field [0001] The invention relates to the technical field of hard disk monitoring and protection, in particular to a SMART-based method and device for predicting hard disk sub-health indicators. Background technique [0002] Hard disks will gradually produce bad sectors as time goes by during use. When there are enough bad sectors, it will affect the security of data storage. Generally, the way to solve this problem is to perform redundant backup of data, but even if RAID1 is adopted, the It is unavoidable that both the data drive and the backup drive fail at the same time. [0003] SMART (Self-Monitoring Analysis And Reporting Technology, self-monitoring analysis and reporting technology), as a technical standard for automatically monitoring the integrity of hard disk drives and reporting potential problems, is a data security technology commonly used by hard disks. It monitors the system when the hard disk is working. The status of electrodes, circuits, disks, m...

AI Technical Summary

Problems solved by technology

[0002] Hard disks will gradually produce bad sectors as time goes by during use. When there are enough bad sectors, it will affect the security of data storage. Generally, the way to solve this problem is to perform redundant backup of data, but even if RAID1 is adopted, the It is unavoidable that the data hard disk and the backup hard disk fail at the same time

[0003] SMART (Self-Monitoring Analysis And Reporting Technology, self-monitoring analysis and reporting technology), as a technical standard for automatically monitoring the integrity of hard disk drives and reporting potential problems, is a data security technology commonly used by hard disks. It monitors the system when the hard disk is working. The status of electrodes, circuits, disks, magnetic heads, etc.; in the prior art, hard disk manufacturers generally use the threshold judgment method to predict hard disk failures, that is, use the hard disk SMART technology to collect the index information of various monitoring data items when the hard disk is running, And respectively compared with the hard disk failure warning thresholds of the indicator information of the various monitoring data items set in advance, when the failure warning threshold is exceeded, the failure warning is triggered; When the threshold is set, the false alarm rate is often chosen to be minimized. This approach also sacrifices the accuracy of the prediction. Moreover, most of the indicators in the above-mentioned SMART monitoring data items are not related to hard disk failures. In existing technologies, when the false alarm rate is about 0.1%, the accuracy rate of hard disk failure monitoring is only 3%-10%.

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