Title :
Statistical modeling and analysis of hard disk drives (HDDs) failure
Author :
Zhimin He ; Hao Yang ; Min Xie
Author_Institution :
Data Storage Inst., A*Star, Singapore, Singapore
fDate :
Oct. 31 2012-Nov. 2 2012
Abstract :
The meantime to failure (MTTF) specified in HDDs data sheets, suggests a constant failure rate with the failure probability density following an exponential distribution. However, actual field data of HDD replacement indicated the failure rate is not a constant with age. This could be due to the complexity nature of the HDDs´ structure and underlying failure mode. Based on the gathered user field data of HDD failure, this article provides an evaluation of Weibull modeling, with exponential modeling as a special case in reliability modeling of HDDs. It concludes a two stage sectional Weibull modeling performs adequately in modeling HDDs failure through 5 years lifetime.
Keywords :
Weibull distribution; disc drives; exponential distribution; hard discs; statistical analysis; HDD failure; MTTF; Weibull modeling; exponential distribution; failure probability density; hard disk drives; meantime to failure; statistical analysis; statistical modeling; Data models; Disk drives; Educational institutions; Hard disks; Reliability; Sociology; Statistics; Reliability; Weibull modeling; annual failure rate; exponential modeling; hard disk drives; mean time to failure (MTTF);
Conference_Titel :
APMRC, 2012 Digest
Conference_Location :
Singapore
Print_ISBN :
978-1-4673-4734-1
