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:
Jul. 07, 2009
Filed:
Feb. 04, 2005
Gavin David Cohen, Pleasanton, CA (US);
Donald Alvin Trimmer, Livermore, CA (US);
Rico Blaser, San Francisco, CA (US);
Gavin David Cohen, Pleasanton, CA (US);
Donald Alvin Trimmer, Livermore, CA (US);
Rico Blaser, San Francisco, CA (US);
NETAPP, Inc., Sunnyvale, CA (US);
Abstract
A method and apparatus for efficiently deleting data including backup or snapshots upon expiration are disclosed. The data can be deleted even without physical access to the data. A data generation unit generates a data. Each data has an expiration time and should be deleted upon expiration. An encryption unit encrypts the data, and the encrypted data is stored in data storage. A controller monitors whether there is an expired data, and if there is an expired data, the controller deletes a key necessary for decrypting the expired data.