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:
Jan. 14, 2025
Filed:
Sep. 14, 2022
Dell Products L.p., Hopkinton, MA (US);
Anton Rang, Houlton, WI (US);
Dell Products L.P., Hopkinton, MA (US);
Abstract
A storage system calculates relative writability of SSDs and biases storage of data from write IOs to the SSD that has the greatest relative writability, where writability is a value calculated as a function of remaining wear-life and drive capacity. When the remaining wear-life of an SSD falls below a threshold, unstable data is evicted from that drive, where data stability is an indication of likelihood of data being changed. The drive with the greatest relative writability is selected as the target for the unstable data. The drive with the greatest relative writability is also selected as the donor for stable data that is moved to the free space created by eviction of the unstable data. Consequently, the SSD that triggers the low wear-life threshold processes fewer write IOs.