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. 29, 2020
Filed:
Sep. 22, 2017
Emc Ip Holding Company Llc, Hopkinton, MA (US);
Bob Yan, Chengdu, CN;
Bernie Hu, Chengdu, CN;
Rui Liao, Chengdu, CN;
Vincent Wu, Chengdu, CN;
Jia Huang, Chengdu, CN;
EMC IP Holding Company LLC, Hopkinton, MA (US);
Abstract
The present disclosure provides a method, apparatus and system for data deduplication comprising setting, for a to-be-deduplicated data block, a pointer pointed to the to-be-deduplicated data block as a pointer pointed to a corresponding to-be-reserved data block, and setting a virtual pointer pointed to the to-be-deduplicated data block, cancelling, in response to an available storage capacity reaching a predetermined value, virtual pointers of respective to-be-deduplicated data blocks to be reclaimed, and reclaiming storage spaces of the respective to-be-deduplicated data blocks to be reclaimed, wherein when the virtual pointer pointed to the to-be-deduplicated data block is available, the to-be-deduplicated data block is directly accessed through the virtual pointer.