Disk drive detecting positive correlation in fly height measurements

A disk drive is disclosed comprising a plurality of disks having a plurality of disk surfaces. The disk drive further comprises a head actuated over each disk surface, and a spindle motor for rotating the disks. A first fly height measurement is generated for a first disk surface, and a second fly h...

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Hauptverfasser: KNIGGE BERNHARD E, MCFADYEN JAMES P. R
Format: Patent
Sprache:eng
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Beschreibung
Zusammenfassung:A disk drive is disclosed comprising a plurality of disks having a plurality of disk surfaces. The disk drive further comprises a head actuated over each disk surface, and a spindle motor for rotating the disks. A first fly height measurement is generated for a first disk surface, and a second fly height measurement is generated for a second disk surface. A positive correlation is detected in the first and second fly height measurements.