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:
Nov. 11, 2025
Filed:
Apr. 18, 2024
Dell Products L.p., Round Rock, TX (US);
Dell Products L.P., Round Rock, TX (US);
Abstract
Techniques for keeping on-disk, physical deduplication ('dedupe') index levels up to date to increase the efficiency of data deduplication in storage systems. The techniques include providing a plurality of dedupe indexes across a memory level and a disk level of a storage system, in which the plurality of dedupe indexes include an in-memory dedupe index at the memory level, and an on-disk dedupe index at the disk level. The techniques include applying a plurality of eviction rules regarding evicting entries of the on-disk dedupe index, in which the plurality of eviction rules avoid random evictions of entries from the on-disk dedupe index. The techniques include, in response to applying the plurality of eviction rules, identifying a plurality of entries of the on-disk dedupe index as eviction candidates. The techniques include evicting the identified eviction candidates from the on-disk dedupe index.