Caching systems and methods for hard disk drives and hybrid drives
AssigneeMarvell World Trade Ltd.
InventorSehat Sutardja
Life of this patent
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Abstract
A system includes a read/write module and a caching module. The read/write module is configured to access a first portion of a recording surface of a rotating storage device. Data is stored on the first portion of the recording surface of the rotating storage device at a first density. The caching module is configured to cache data on a second portion of the recording surface of the rotating storage device at a second density. The second portion of the recording surface of the rotating storage device is separate from the first portion of the recording surface of the rotating storage device. The second density is less than the first density.
Claims24
A system comprising:
- a read/write module configured to access a first portion of a recording surface of a rotating storage device, wherein data is stored on the first portion of the recording surface of the rotating storage device at a first density;
- and
- a caching module configured to cache data on a second portion of the recording surface of the rotating storage device at a second density,
- wherein the second portion of the recording surface of the rotating storage device is separate from the first portion of the recording surface of the rotating storage device,
- wherein the second density is less than the first density;
- and
- wherein the first density and the second density indicate number of sectors per track or number of bytes per sector.
A method comprising:
- storing data on a first portion of a recording surface of a rotating storage device at a first density;
- and
- caching data on a second portion of the recording surface of the rotating storage device at a second density,
- wherein the second portion of the recording surface of the rotating storage device is separate from the first portion of the recording surface of the rotating storage device,
- wherein the second density is less than the first density, and
- wherein the first density and the second density indicate number of sectors per track or number of bytes per sector.
Dependencies are inferred from the claim text.