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:
Apr. 21, 2015
Filed:
May. 14, 2013
Applicant:
International Business Machines Corporation, Armonk, NY (US);
Inventors:
Allen K. Bates, Tucson, AZ (US);
Nils Haustein, Soergenloch, DE;
Craig A. Klein, Redington Beach, FL (US);
Frank Krick, Ockenheim, DE;
Ulf Troppens, Mainz, DE;
Daniel J. Winarski, Tucson, AZ (US);
Assignee:
International Business Machines Corporation, Armonk, NY (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H03M 13/00 (2006.01); G06F 13/00 (2006.01); G06F 17/00 (2006.01); G06F 17/30 (2006.01); G06F 11/10 (2006.01); H03M 13/09 (2006.01);
U.S. Cl.
CPC ...
G06F 17/30303 (2013.01); G06F 11/1004 (2013.01); H03M 13/09 (2013.01);
Abstract
Various embodiments for differentiating between data and stubs pointing to a parent copy of deduplicated data are provided. Undeduplicated data is stored with a checksum of an initial value as a first cyclic redundancy check (CRC) seed. A stub pointing to the parent copy of the deduplicated data is stored with an additional checksum of a differing, additional initial value as a second CRC seed.