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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-
Mar 23, 2004
Grant Date -
N/A
app pub date -
Jan 19, 2000
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. The drive normally operates under ambient or relatively low internal pressure. However, when the drive is in imminent risk for a head-disk interface failure, the drive is pressurized 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 addition, 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, and other performance variables.
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