ALEXANDRIA, Va., Sept. 10 -- United States Patent no. 12,411,810, issued on Sept. 9, was assigned to Dell Products LP (Round Rock, Texas).

"Efficient removal of stale entries from on-drive deduplication hash tables using hash prefix indexing" was invented by Amit Zaitman (Shavey Shomron, Israel), Uri Shabi (Tel Mond, Israel) and Alexander Shknevsky (Fair Lawn, N.J.).

According to the abstract* released by the U.S. Patent & Trademark Office: "Techniques for achieving efficient removal of stale index entries from on-drive deduplication indexes using hash prefix indexing. The techniques include providing an on-drive dedupe index that includes a plurality of index entries. Each index entry includes a hash value of a data page, and an address ...