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:
Mar. 22, 2011
Filed:
Feb. 02, 2006
Asit Desai, San Ramon, CA (US);
Richard Zulch, Orinda, CA (US);
Asit Desai, San Ramon, CA (US);
Richard Zulch, Orinda, CA (US);
EMC Corporation, Hopkinton, MA (US);
Abstract
Efficient incremental backups using a change database is disclosed. Based at least in part on a file attribute it is determined that a file has changed since a previous backup. Change data is stored in a data structure additional to a file system with which a file is associated. Change data indicates the file has changed since the previous backup. The file attribute is configured to be reset, each time a file is backed up, to a value indicating the file has not changed. Storing the change data enables a backup operation performed subsequent to the file attribute being reset to determine that the file has changed since the previous backup.