Magnetic disk device and write method
AssigneesKabushiki Kaisha Toshiba, Toshiba Electronic Devices & Storage Corporation
InventorsMichihiko Umeda, Minoru Yamamoto
Life of this patent
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Abstract
According to one embodiment, a magnetic disk device including a disk, a head configured to write data to the disk, a buffer memory configured to temporarily hold data to be written to the disk, a recorder configured to temporarily hold data to be input from the buffer memory, and a controller configured to transfer first data from the buffer memory to the recorder and to transfer second data corresponding to the first data from the recorder.
Claims18
A magnetic disk device comprising:
- a disk;
- a head configured to write data to the disk;
- a buffer memory configured to temporarily hold data to be written to the disk;
- a recorder configured to temporarily hold data to be input from the buffer memory;
- and
- a controller configured to transfer first data from the buffer memory to the recorder and to transfer second data corresponding to the first data from the recorder, wherein
- the controller allocates a first area in the buffer memory, sequentially transmits the second data to the first area, and writes the second data to the disk in the transmission order to the first area.
A magnetic disk device, comprising:
- a disk;
- a head configured to write data to the disk;
- a buffer memory configured to temporarily hold data to be written to the disk;
- a recorder configured to temporarily hold data to be input from the buffer memory;
- and
- a controller configured to transfer first data corresponding to the first WRITE SAME command from the buffer memory to the recorder, to transfer second data corresponding to the first data from the recorder, to the buffer memory, and to sequentially write the second data transferred to the buffer memory, to the disk.
A write method applied to a magnetic disk device including a disk, a head configured to write data to the disk, a buffer memory configured to temporarily hold data to be written to the disk, and a recorder configured to temporarily hold the data input from the buffer memory, the write method comprising:
- transferring first data from the buffer memory to the recorder;
- and
- transferring second data corresponding to the first data from the recorder to the buffer memory;
- securing a first area in the buffer memory;
- sequentially transmitting the second data to the first area;
- and
- writing the second data to the disk in the transmission order to the first area.
Dependencies are inferred from the claim text.