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. 24, 2020
Filed:
Jul. 31, 2017
Emc Ip Holding Company Llc, Hopkinton, MA (US);
Ilya Usvyatsky, Northborough, MA (US);
Nickolay Alexandrovich Dalmatov, Saint Petersburg, RU;
EMC IP Holding Company LLC, Hopkinton, MA (US);
Abstract
A technique accesses a non-resident segment and a resident segment of a segmented de-duplication index, the resident segment being currently loaded into primary memory from secondary storage for data block de-duplication, and the non-resident segment not being currently loaded into the primary memory from the secondary storage for de-duplication. The technique further discovers that a digest of a non-resident digest entry of the non-resident segment and a digest of a resident digest entry of the resident segment are duplicates. The non-resident digest entry includes a first reference to a first location of the secondary storage that holds a first data block copy, and the resident digest entry includes a second reference to a second location of the secondary storage that holds a second data block copy. The technique further performs reconciliation that conforms the non-resident segment and the resident segment of the index to reference only data block copy.