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:
May. 07, 2019
Filed:
Jun. 23, 2016
International Business Machines Corporation, Armonk, NY (US);
Erik Rueger, Ockenheim, DE;
Heiko H. Schloesser, Tucson, AZ (US);
Christof Schmitt, Tucson, AZ (US);
International Business Machines Corporation, Armonk, NY (US);
Abstract
A mechanism is provided for opportunistic handling of freed data in data de-duplication. Responsive to receiving a request to store a file in a storage device, the file is mapped to a set of virtual blocks. For each virtual block in the set of virtual blocks: a hash value is computed, a determination is made as to whether the computed hash value appears within a previously-used information table as associated with an existing data block, and, responsive to the computed hash value appearing within a previously-used information table as associated with an existing data block, a data block entry and hash value associated with the existing data block is moved to a de-duplication information table. The virtual block is then stored as a reference to the existing data block.