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:
Jun. 09, 2026
Filed:
Mar. 29, 2023
International Business Machines Corporation, Armonk, NY (US);
Radu Ioan Stoica, Zurich, CH;
Dan Lazar, Houston, TX (US);
Timothy J. Fisher, Cypress, TX (US);
Nikolaos Papandreou, Thalwil, CH;
Roman Alexander Pletka, Uster, CH;
Charalampos Pozidis, Thalwil, CH;
Aaron Daniel Fry, Richmond, TX (US);
Andrew D. Walls, San Jose, CA (US);
International Business Machines Corporation, Armonk, NY (US);
Abstract
A controller of the solid-state drive (SSD) maintains a logical-to-physical translation layer, wherein metadata for the logical-to-physical translation layer is stored in metadata pages in a flash memory of the SSD. The controller tracks a write heat of the metadata pages. The controller stores relatively more frequently accessed metadata pages in a non-durable cache of the SSD. The controller prioritized metadata write operations based on write heat of the metadata pages, such that a NAND flash block of the flash memory contains metadata pages with a similar write heat, wherein extents with similar write heats are grouped together into a stripe that stores extent data, and wherein write heats of the extents with the similar write heats do not differ from each other beyond a predetermined threshold.