Method and apparatus for testing the reliability of a disk drive
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United States of America Patent
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Jan 10, 2006
Grant Date -
Nov 6, 2003
app pub date -
May 2, 2002
filing date -
May 2, 2002
priority date (Note) -
Expired
status (Latency Note)
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Abstract
The present invention provides a method, apparatus and program product for testing the reliability of a disk drive. The head-to-disk clearance of a disk drive is measured at different slider airbearing conditions. The change in head-to-disk clearance between the slider airbearing conditions is calculated. If the calculated head-to-disk clearance change between airbearing conditions for each of the heads in the disk drive exceeds a predetermined threshold, the disk drive is verified as having passed the reliability test. Differences in slider airbearing conditions are generated by varying pressures and/or temperatures under which the drive is operated.
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