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:
Dec. 31, 2019
Filed:
Sep. 22, 2017
Emc Ip Holding Company Llc, Hopkinton, MA (US);
Mikhail Danilov, Saint Petersburg, RU;
Mark A. O'Connell, Westborough, MA (US);
EMC IP Holding Company LLC, Hopkinton, MA (US);
Abstract
The described technology is generally directed towards a hybrid copying garbage collector in a data storage system that processes low capacity real chunks and virtual chunks (which reference data on other storage systems) into real chunks with a relatively high data capacity utilization. Real and virtual chunks with low capacity utilization are detected and copied into a higher capacity utilization real chunk, after which the low capacity chunks are deleted and their space reclaimed. As a result, much of the virtual chunk data that is to be migrated into a real chunk in the data storage system is migrated during garbage collection instead of as a separate migration process. Only the virtual chunk data that is relatively high capacity needs to be processed into real chunks by a separate migration process.