The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Date of Patent:
Jun. 01, 2021

Filed:

Sep. 11, 2020
Applicants:

Kabushiki Kaisha Toshiba, Tokyo, JP;

Toshiba Electronic Devices & Storage Corporation, Tokyo, JP;

Inventors:

Naota Muguruma, Yokohama Kanagawa, JP;

Kenji Yoshida, Kamakura Kanagawa, JP;

Kazuya Takada, Chigasaki Kanagawa, JP;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G11B 27/36 (2006.01); G11B 5/00 (2006.01); G11B 19/04 (2006.01); G11B 5/02 (2006.01);
U.S. Cl.
CPC ...
G11B 19/044 (2013.01); G11B 5/02 (2013.01);
Abstract

According to one embodiment, a magnetic disk device includes a magnetic disk, an actuator, a nonvolatile memory, and a controller. When a first determination condition of whether a total value of an amount of data for which execution completion has not been notified in one processing thread that executes a write command, the data having not been written to the magnetic disk, and an amount of the data for which execution completion has been notified in another processing thread that executes the write command, the data having not been written to the magnetic disk, is less than or equal to a capacity of the nonvolatile memory holds, the controller notifies the host of execution completion of the write command in the one processing thread.


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