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. 14, 2010
Filed:
Aug. 03, 2007
Roger Keith Stager, Sunnyvale, CA (US);
Don Alvin Trimmer, Sunnyvale, CA (US);
Pawan Saxena, Sunnyvale, CA (US);
Randall Johnson, Pleasant Grove, UT (US);
Craig Anthony Johnston, Sunnyvale, CA (US);
Yafen Peggy Chang, Sunnyvale, CA (US);
Rico Blaser, San Francisco, CA (US);
Roger Keith Stager, Sunnyvale, CA (US);
Don Alvin Trimmer, Sunnyvale, CA (US);
Pawan Saxena, Sunnyvale, CA (US);
Randall Johnson, Pleasant Grove, UT (US);
Craig Anthony Johnston, Sunnyvale, CA (US);
Yafen Peggy Chang, Sunnyvale, CA (US);
Rico Blaser, San Francisco, CA (US);
NetApp, Inc., Sunnyvale, CA (US);
Abstract
A method for tracking changes on a primary volume in a continuous data protection system writes data to the primary volume. A copy of the data is written to a secondary volume, the secondary volume including all writes made to the primary volume. Each write made to the secondary volume is mapped in a data structure, such that the data structure tracks changes on the primary volume between two different points in time.