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:
Oct. 29, 2013
Filed:
Apr. 27, 2007
Oliver Augenstein, Horgen, CH;
Thomas Prause, Rottenburg, DE;
Oliver Augenstein, Horgen, CH;
Thomas Prause, Rottenburg, DE;
International Business Machines Corporation, Armonk, NY (US);
Abstract
The present invention provides methods and an infrastructure for performing repetitive data protection and a corresponding restore of data for block oriented data objects comprising several indexed segments. For implementing the invention, timestamps tare set by a timer k. Only the first data modification of a segment is recorded, after a timestamp thas been set, by storing the old data contents of said segment together with the segment index j and said timestamp tas undo-log block in a first journal j, before overwriting said segment with the modified new data. Besides, said undo-log blocks are transmitted to N journals jfor storing redundant undo-log information, with N>1 and i=0, . . . , N−1. According to the present invention for each journal jjournal-specific timestamps tare generated, so that each journal jis written for a different set of timestamps t.