Magnetic disk device

CN120687023APending Publication Date: 2025-09-23KK TOSHIBA +1
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Patent Information

Application Number
CN202410807345.1
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Priority Date
2024-03-22
Filing Date
2024-06-21
Publication Date
2025-09-23

AI Technical Summary

Technical Problem

When performing internal processing, conventional magnetic disk devices may easily reduce the response speed of commands from the host, especially when processing commands other than access commands, the efficiency is low.

Method used

By setting up multiple actuator systems in the disk device and under the management of the controller, internal processing commands are assigned to actuator systems with fewer commands for processing. At the same time, dedicated logic units and queues are allocated to each actuator system to optimize the execution order and distribution of commands.

Benefits of technology

This effectively suppresses the impact of internal processing on the host command response speed, improves the overall performance of the disk device, and ensures that other commands except access commands can also be processed quickly.

✦ Generated by Eureka AI based on patent content.

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Abstract

Provided is a high-performance magnetic disk device. A magnetic disk device includes a magnetic disk, a plurality of magnetic heads that write and read data to and from the magnetic disk, a plurality of actuator systems that move a portion of the plurality of magnetic heads different from each other relative to the magnetic disk, a memory, and a controller. The memory is provided with a plurality of control queues each corresponding to one different actuator system from among the plurality of actuator systems. Each of the plurality of control queues is configured so as to be capable of storing one or more commands. The controller executes: receiving a plurality of first commands from a host; storing each of the plurality of first commands in one of the plurality of control queues; generating a second command for internal processing; storing the second command in a first control queue, which is a control queue in which the number of commands stored is the smallest, among the plurality of control queues; and executing, for each of the plurality of control queues, an operation for processing one or more commands stored in one control queue using an actuator system corresponding to one of the plurality of control queues.
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Citation Information

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