Disk drive defining guard bands to support zone sequentiality when butterfly writing shingled data tracks
US8699185B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 10, 2012 |
| Grant date | Apr 15, 2014 |
| Priority date | — |
| Expiry date | Dec 10, 2032 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B5/09
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A disk drive is disclosed wherein a plurality of zones are defined on first and second disk surfaces, wherein each zone comprises a plurality of data tracks. Data is written to the data tracks of a first plurality of the zones on the first and second disk surfaces in an interleaved manner, in a first radial direction, and in a shingled manner. Data is written to the data tracks of a second plurality of the zones on the first and second disk surfaces in an interleaved manner, in a second radial direction opposite the first radial direction, and in a shingled manner. At least one guard band is defined at a boundary between a first zone and a second zone in the second plurality of zones on the first disk surface, wherein the guard band comprises at least one unused data track.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.