Western Digital Technologies, Inc.

Jahangir John Kasraee

Don Brunnett

Chun Sei Tsai

Sang Huynh

Kent William Gibbons

Anthony L Pei

A disk drive is disclosed comprising a disk comprising a plurality of tracks, and a head actuated over the disk. A plurality of refresh zones are defined, wherein each refresh zone corresponds to a plurality of the tracks. Data is written to a first refresh zone, and a first zone counter is updated for a second refresh zone at a first rate. Data is written to a third refresh zone, and the first zone counter is updated for the second refresh zone at a second rate different than the first rate.

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Irvine, CA, United States of America

Jahangir John Kasraee