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:
Jan. 13, 2009
Filed:
Apr. 13, 2006
Kristof DE Spiegeleer, Knokke-Heist, BE;
Koen D'hondt, The Hague, BE;
Kristof De Spiegeleer, Knokke-Heist, BE;
Koen D'hondt, The Hague, BE;
Symantec Operating Corporation, Cupertino, CA (US);
Abstract
A data backup system can be operable to determine whether to send a data file segment to backup storage. The data backup system can comprise a comparator operable to compare a boundary parameter of a candidate segment proposed for sending to backup storage to a boundary parameter of a previously stored segment to determine whether the candidate segment potentially corresponds to the previously stored segment. The data backup system can also comprise a comparator operable, if it is determined that the candidate segment potentially corresponds to the previously stored segment, to compare a checksum value for the candidate segment to a checksum value for the previously stored segment to determine whether the candidate segment has previously been stored to the second location. A storage engine can be provided to send to backup storage a segment determined not to have previously been stored. Thereby a single instance store can be implemented whereby a modified segment can be identified and a segment boundary adjusted to avoid re-storage of previously stored data.