Hard Disk Drive Reliability Modeling and Failure Prediction

A reliability model for the hard disk drive (HDD) is developed, focusing on head-disk separation as the primary independent variable. The model is structured to incorporate the theoretical effects of environmental factors, plus empirical dependence on the product operating mode. An experimental meth...

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Bibliographic Details
Published inIEEE transactions on magnetics Vol. 43; no. 9; pp. 3676 - 3684
Main Authors Strom, B.D., SungChang Lee, Tyndall, G.W., Khurshudov, A.
Format Journal Article
LanguageEnglish
Published New York IEEE 01.09.2007
The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subjects
Altitude
Costs
Disk drives
Disk recording
Empirical analysis
Failure prediction
Focusing
Hard disks
HDD
head-disk clearance
Humidity
magnetic hard disk drive
Magnetic heads
Magnetic recording
Magnetic separation
Magnetism
Mathematical models
Predictive models
reliability model
Rough surfaces
Separation
Statistical analysis
Surface roughness
Temperature
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Summary:A reliability model for the hard disk drive (HDD) is developed, focusing on head-disk separation as the primary independent variable. The model is structured to incorporate the theoretical effects of environmental factors, plus empirical dependence on the product operating mode. An experimental method based on magnetic spacing loss theory is used to characterize the head-media separation as a function of temperature, altitude, humidity, and HDD operating mode. A statistical model based on these empirical data is developed to predict HDD reliability for various operating conditions. The predictions of the model are verified experimentally through comparison with HDD product reliability test data.
Bibliography:ObjectType-Article-2
SourceType-Scholarly Journals-1
ObjectType-Feature-1
content type line 23
ISSN:0018-9464
1941-0069
DOI:10.1109/TMAG.2007.902969