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:
Sep. 23, 2025
Filed:
Nov. 06, 2023
Solid-state disks wear leveling with predictive migration of data devices in a raid container system
Dell Products L.p., Hopkinton, MA (US);
Dell Products L.P., Hopkinton, MA (US);
Abstract
A container system facilitates selective migrations of data from high-wear inducing data devices to spare data devices to promote SSD wear levelling. Storage capacity is configured into same-size cells with each container having the same number of cells as RAID width W. The cells are distributed over W SSDs. The containers are subdivided into equal-size data devices, each distributed over the same set of W SSDs as its associated container. Candidate migration source-target pairs are selected using heuristics guided by a prediction model that correlates disk wear rate with total writes of existing workloads. Wear rate predictions are computed using a weighted sum of write rates of all data devices on a disk. Wear rate predictions for candidate migration pairs are computed inclusive of additional wear caused by data migration to select a migration plan.