Disk drive refreshing zones based on serpentine access of disk surfaces
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United States of America Patent
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Jan 18, 2011
Issued Date -
N/A
app pub date -
Jun 26, 2007
filing date -
Jun 26, 2007
priority date (Note) -
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Abstract
A disk drive is disclosed including a first disk surface comprising a plurality of data tracks, wherein each data track comprises a first plurality of data sectors, and a second disk surface comprising a plurality of data tracks, wherein each data track comprises a second plurality of data sectors. A first head is actuated over the first disk surface and a second head is actuated over the second disk surface. The first and second data sectors are accessed in a serpentine access pattern, wherein a plurality of refresh zones are defined relative to the serpentine access pattern. When a write command is received from a host, data is written to at least one of the refresh zones, and a refresh monitor associated with the refresh zone is updated.
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