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. 01, 2008
Filed:
Feb. 04, 2004
Roger Keith Stager, Livermore, CA (US);
Donald Alvin Trimmer, Livermore, CA (US);
Pawan Saxena, Pleasanton, CA (US);
Randall Johnson, Pleasant Grove, UT (US);
Craig Anthony Johnston, Livermore, CA (US);
Yafen Peggy Chang, Fremont, CA (US);
Rico Blaser, San Francisco, CA (US);
Roger Keith Stager, Livermore, CA (US);
Donald Alvin Trimmer, Livermore, CA (US);
Pawan Saxena, Pleasanton, CA (US);
Randall Johnson, Pleasant Grove, UT (US);
Craig Anthony Johnston, Livermore, CA (US);
Yafen Peggy Chang, Fremont, CA (US);
Rico Blaser, San Francisco, CA (US);
Network Appliance, Inc., Sunnyvale, CA (US);
Abstract
A method and system wherein data is structured so that writes may be continuously duplicated and a protected volume may be restored to a particular point in time as desired. Writes are continuously duplicated on a secondary volume and organized into delta maps. The delta maps indicate which memory blocks were written to during a particular time frame.