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:
Feb. 25, 2025
Filed:
Jul. 07, 2023
Western Digital Technologies, Inc., San Jose, CA (US);
Navin Kochar, Karnataka, IN;
Sampath Kumar Raja Murthy, Karnataka, IN;
Suhaib Mohammed Adhoni, Karnataka, IN;
SANDISK TECHNOLOGIES, INC., Milpitas, CA (US);
Abstract
Aspects of a storage device are provided including improved victim zone selection for zone-based GC in ZNS. The storage device includes a NVM having first, second, and third blocks, and a controller. The controller creates a first superblock including the first blocks, a second superblock including the second blocks, and a third superblock including the third blocks. The controller determines whether a quantity of data overwrites associated with a first zone in the first superblock is larger than a quantity of data overwrites associated with a second zone in the first superblock. From the determination, the controller performs GC for the first zone prior to GC for the second zone, in which data overwrites associated with the first zone in the first superblock and sequential data associated with the first zone in the third superblock are relocated to the second superblock. Thus, storage device performance is improved and WAF reduced.
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