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. 19, 2010
Filed:
Sep. 02, 2009
Michael L. Federwisch, San Jose, CA (US);
Shane S. Owara, Mountain View, CA (US);
Stephen L. Manley, London, GB;
Steven R. Kleiman, Los Altos, CA (US);
Michael L. Federwisch, San Jose, CA (US);
Shane S. Owara, Mountain View, CA (US);
Stephen L. Manley, London, GB;
Steven R. Kleiman, Los Altos, CA (US);
NetApp, Inc., Sunnyvale, CA (US);
Abstract
A method for backing up a computer file system is disclosed. A first snapshot of the file system is generated at a first time, the first snapshot having first pointers to data blocks of the file system at the first time. A network adapter receives storage operations to write new data to the file system. A second snapshot of the file system is generated at a second time, the second snapshot having second pointers to data blocks of the file system at the second time, the data blocks at the second time including the new data. The first pointers to the second pointers are compared. In response to the second pointers differing from the first pointers, data of the file system which have been changed between the first snapshot and the second snapshot are copied to a backup copy of the file system.