System and method for gracefully relinquishing a computer hard disk drive from imminent catastrophic failure
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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-
Jan 20, 2004
Issued Date -
N/A
app pub date -
Sep 30, 2002
filing date -
Jan 19, 2000
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A computer hard disk drive has a drive controller that monitors the condition of the head-disk interface within the drive. In response to sensing a degradation of the head-disk interface, the drive prolongs the onset of failure by selectively altering performance parameters. In one embodiment, the internal pressure of the drive is increased to allow the air bearing surfaces of the heads to achieve a greater flying height above the surfaces of their respective disks, thereby delaying the onset of a catastrophic head-disk interface failure. In other embodiments, the spindle rotation rate and/or the slider head access rate are decreased to avoid hastening the imminent failure. Measurements of the condition and stability of the head-disk interface inside the drives are made by monitoring data error rates, head flying height, or other performance variables.
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