Systems and methods for improving sequential data rate performance using sorted data zones for butterfly format
US8693133B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 13, 2013 |
| Grant date | Apr 8, 2014 |
| Priority date | — |
| Expiry date | Feb 13, 2033 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG11B5/59633
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A multi-head disk drive is disclosed comprising a plurality of disk surfaces, and a head assembly comprising a plurality of heads, wherein each disk surface comprises a plurality of data zones, and each data zone having a data transfer rate different from the other zones of the respective disk surface. A controller is operable to sequentially write a sequence of data blocks to the plurality of disk surfaces in accordance with a list of head-zone combinations, each head-zone combination corresponding to one of the heads and one of the data zones of the respective disk surface. The head-zone combinations in the list are ordered from highest data transfer rate to lowest data transfer rate, and each disk surface comprises a pivot point defining a direction of writing data in the data zones from one of an outer diameter toward a middle diameter and an inner diameter toward the middle diameter.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.