Magnetic disk device and recording method of the same
AssigneesKabushiki Kaisha Toshiba, Toshiba Electronic Devices & Storage Corporation
InventorsTakahiro Shinbori, Ryuta Kumagai
Life of this patent
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Abstract
According to one embodiment, a magnetic disk device includes heads and a controller. The heads write data in a recording region of the magnetic disk. The controller divides in order, by a track group with a constant size, an entire region of the recording region where management regions indicating physical positions corresponding to the heads, respectively, creates the track groups so as to straddle the management regions at boundaries of the management regions, and controls writing of the data for each of the track groups. The controller assigns unique and logically consecutive numbers to the track groups and manages information on the management regions to which the track groups belong.
Claims7
A magnetic disk device comprising:
- a plurality of heads which writes data in a recording region of a magnetic disk using a shingled magnetic recording method;
- and
- a controller which divides in order, by a track group with a constant size, an entire region of a recording region of the magnetic disk where a plurality of management regions indicating physical positions corresponding to the heads, respectively, are created in advance, creates the track groups so as to straddle the management regions at boundaries of the management regions, respectively, and controls writing of the data for each of the track groups,
- wherein the controller assigns unique and logically consecutive numbers to the track groups, respectively, and manages information on the management regions to which the track groups belong, respectively.
A recording method of a magnetic disk device, the method comprising:
- when the magnetic disk device writes data in a recording region of a magnetic disk using a shingled magnetic recording method with a plurality of heads,
- dividing in order, by a track group with a constant size, an entire region of a recording region where a plurality of management regions indicating physical positions corresponding to the heads, respectively, are created in advance;
- creating a plurality of track groups so as to straddle management regions at boundaries of the management regions, respectively;
- assigning unique and logically consecutive numbers to the track groups, respectively;
- and
- managing information on the management regions to which the track groups belong, respectively, and controlling writing of the data according to the information on the management regions.
Dependencies are inferred from the claim text.