IEEE Transactions on Reliability, Vol. 62, No. 1, pp. 136-145, March 2013

Online Anomaly Detection for Hard Disk Drives Based on Mahalanobis Distance

2Yu Wang, 1Qiang Miao, 2Eden W.M.Ma, 2Kwok-Leung Tsui and 1Michael G. Pecht

1 Center for Advanced Life Cycle Engineering (CALCE), University of Maryland, College Park, MD 20740, USA
2Center for Prognostics & System Health Management, City University of Hong Kong, Hong Kong, China


A hard disk drive (HDD) failure may cause serious data loss and catastrophic consequences. Online health monitoring provides information about the degradation trend of the HDD, and hence the early warning of failures, which gives us a chance to save the data. This paper developed an approach for HDD anomaly detection using Mahalanobis distance (MD). Critical parameters were selected using failure modes, mechanisms, and effects analysis (FMMEA), and the minimum redundancy maximum relevance (mRMR) method. A self-monitoring, analysis, and reporting technology (SMART) data set is used to evaluate the performance of the developed approach. The result shows that about 67% of the anomalies of failed drives can be detected with zero false alarm rate, and most of them can provide users with at least 20 hours during which to backup the data.

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