Magnetic disk device and write processing method
AssigneesKabushiki Kaisha Toshiba, Toshiba Electronic Devices & Storage Corporation
InventorTakao Aoki
Life of this patent
Estimating the term…
Abstract
According to one embodiment, a magnetic disk device includes a disk having a first region to which data is written by normal recording and a second region to which data is written by shingled recording, a head configured to write the data to the disk and read the data from the disk, and a controller configured to, when first data and second data is to be sequentially written to a third region of the second region, reserve a fourth region corresponding to the first data and the second data in the first region, write the first data to the fourth region, write the second data after the first data in the fourth region, and sequentially write the first data and the second data read from the fourth region to the third region.
Claims20
A magnetic disk device comprising:
- a disk having a first region to which data is written by normal recording that writes a plurality of tracks with an interval in a radial direction and having a second region to which data is written by shingled recording that writes a plurality of tracks overlapped in the radial direction;
- a head configured to write the data to the disk and read the data from the disk;
- and
- a controller configured to, when first data and second data is to be sequentially written to a third region of the second region, reserve a fourth region corresponding to the first data and the second data in the first region, write the first data to the fourth region, write the second data after the first data in the fourth region, and sequentially write the first data and the second data read from the fourth region to the third region.
A write processing method applied to a magnetic disk device including a disk having a first region to which data is written by normal recording that writes a plurality of tracks with an interval in a radial direction and having a second region to which data is written by shingled recording that writes a plurality of tracks overlapped in the radial direction and the device comprising a head configured to write the data to the disk and read the data from the disk, the write processing method comprising:
- reserving, when first data and second data is to be sequentially written to a third region of the second region, a fourth region corresponding to the first data and the second data in the first region;
- writing the first data to the fourth region and writing the second data after the first data in the fourth region;
- and
- sequentially writing the first data and the second data read from the fourth region to the third region.
Dependencies are inferred from the claim text.