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:
Aug. 24, 2010
Filed:
Sep. 30, 2005
James T. Compton, Durham, NC (US);
Surrendranath R. Doohkan, Franklin, MA (US);
Stephen A. Fridella, Belmont, MA (US);
Uday K. Gupta, Westford, MA (US);
Nikolay Popov, Wayland, MA (US);
Stephen A. Rago, Warren, NJ (US);
James T. Compton, Durham, NC (US);
Surrendranath R. Doohkan, Franklin, MA (US);
Stephen A. Fridella, Belmont, MA (US);
Uday K. Gupta, Westford, MA (US);
Nikolay Popov, Wayland, MA (US);
Stephen A. Rago, Warren, NJ (US);
EMC Corporation, Hopkinton, MA (US);
Abstract
An improved policy enforcement architecture includes several components that improve the performance of policy enforcement in a hierarchical storage environment. A File System Query instruction permits a richer set of queries to be expressed by a policy engine, thereby permitting more complex policies to be implemented with ease. The File System result is generated at the file server, and only files of interest are forwarded to the policy engine. The file system query advantageously may be applied against a pre-generated index having one more characterizing attributes to further reduce the processing required to retrieve policy data. An Index Build instruction, added to a programming interface, allows a policy engine generate the characterizing indices in advance of use. Index maintenance techniques maintain consistency between the index and the file system to ensure that the policy can be enforced using accurate file information.