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.
Patent No.:
Date of Patent:
May. 08, 2018
Filed:
Apr. 08, 2015
Kabushiki Kaisha Toshiba, Tokyo, JP;
Mine Wonkyung Budiman, Livermore, CA (US);
Andre C. Hall, Fremont, CA (US);
Eric R. Dunn, Cupertino, CA (US);
Thorsten Schmidt, Livermore, CA (US);
Kabushiki Kaisha Toshiba, Tokyo, JP;
Abstract
Data is stored in a hybrid HDD that includes a magnetic storage medium and a nonvolatile solid-state device according to multiple modes of operation: a full caching mode, a transitional caching mode, and an HDD only mode. The mode of operation may be selected based on the current condition or performance of individual storage regions in a nonvolatile solid-state device of the hybrid HDD, or on the current condition or performance of the nonvolatile solid-state device as a whole. As the nonvolatile solid-state device undergoes wear, performance of the hybrid HDD is maintained by using less reliable memory blocks in the nonvolatile solid-state device as a read cache, even when these memory blocks are considered too unreliable to store dirty data.