Magnetic disk device stored trace data of the read/write processing
AssigneesKabushiki Kaisha Toshiba, Toshiba Electronic Devices & Storage Corporation
InventorsKimiyasu Aida, Kazuya Takada
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Abstract
According to one embodiment, a magnetic disk device incudes a first magnetic disk, a first actuator that reads/writes data from/to the first magnetic disk, a first controller that controls the first actuator, a second magnetic disk, a second actuator that reads/writes data from/to the second magnetic disk, a second controller that controls the second actuator, wherein the first controller executes read/write processing, and the second controller stores trace data of the read/write processing when the first controller executes the read/write processing.
Claims5
A magnetic disk device comprising:
- a first magnetic disk;
- a first actuator that reads/writes data from/to the first magnetic disk;
- a first controller that is configured to communicate with a host computer and control the first actuator according to a command received from the host computer;
- a second magnetic disk;
- a second actuator that reads/writes data from/to the second magnetic disk;
- a second controller that controls the second actuator according to the command transferred from the first controller, and
- a buffer memory connected to the first controller and the second controller;
- wherein
- when the command is received from the host computer, the first controller stores control content based on the command in the buffer memory and transfers the command to the second controller, and
- when the first controller controls the first actuator based on the command, the second controller acquires the control content of the first controller based on the command from the buffer memory, and stores an acquired processing content in the second magnetic disk as trace data.
Dependencies are inferred from the claim text.