However, flash memories have a limited number of clear/write cycles. Because of imperfections in the manufacturing process, few such errors can be anticipated. This is a symptom of a problem with the underlying flash hardware where the drive was unable to clear or store data in a block. Worth mentioning because of wear-leveling algorithms used in SSDs, when several blocks start failing, chances are many more will fail soon.Program/Erase (P/E) fail count: While the underlying technology is radically different, that indicator seems as significant in the SSD world than it was in the hard drive world. attributes are good indicators of imminent failure. In 2016, Microsoft and The Pennsylvania State University conducted a study focussing on SSDs.Īccording to that study, it appears some S.M.A.R.T. reported issues to anticipate disk replacement needs in data centers or server farms. technology particularly interests company using a large number of storage units, and field studies have been conducted to estimate the accuracy of S.M.A.R.T. Given the statistical nature of failure prediction, the S.M.A.R.T. should be used to estimate the likeliness of a failure. It cannot predict with 100% accuracy a failure nor, on the other hand, guarantee a drive will not fail without any early warning. What isn’t S.M.A.R.T.?Īll that seems wonderful. gives an option for the operating system or the system administrator to identify soon-to-fail drives so they can be replaced before any data loss occurs.

Since drives usually don’t fail abruptly, S.M.A.R.T.

would allow anticipating predictable failures such as those caused by mechanical wearing or degradation of the disk surface, as well as unpredictable failures caused by an unexpected defect. and can also perform on-demand tests on the drive.

will monitor several disk parameters during normal drive operations, like the number of reading errors, the drive startup times or even the environmental condition. –for Self-Monitoring, Analysis, and Reporting Technology- is a technology embedded in storage devices like hard disk drives or SSDs and whose goal is to monitor their health status.

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