International Business Machines Corporation

Ulla Vasant Nayak

Andrew Ching Tam

Peter Michael Baumgart

Thao Anh Nguyen

Thomas A Gregory

Run-Han Wang

Michael Luis Ramirez

A disk drive having a disk with a contact start/stop (CSS) region on which a slider can rest is described. The CSS region is divided into at least three zones with the inner and outer zones having a surface topography which is different from the surface topography of the middle zone. The middle zone of the CSS region may be textured with bumps having a lower average height, a lower average density and/or a different bump diameter. The middle zone may also be left untextured. The slider is maintained over the CSS region during spin up and/or spin down.

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San Jose, CA, United States of America

Ulla Vasant Nayak