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:
May. 31, 2011
Filed:
Aug. 18, 2006
Robert J. Anderson, London, GB;
Neal T. Fachan, Seattle, WA (US);
Eric M. Lemar, Seattle, WA (US);
Aaron J. Passey, Seattle, WA (US);
David W. Richards, Seattle, WA (US);
Darren P. Schack, Seattle, WA (US);
Robert J. Anderson, London, GB;
Neal T. Fachan, Seattle, WA (US);
Eric M. Lemar, Seattle, WA (US);
Aaron J. Passey, Seattle, WA (US);
David W. Richards, Seattle, WA (US);
Darren P. Schack, Seattle, WA (US);
EMC Corporation, Hopkinton, MA (US);
Abstract
In one embodiment, a user or client device is connected to a distributed file system comprised of one or more physical nodes. The data on each of the physical nodes store metadata about files and directories within the file system. Some of the embodiments permit a user to take a snapshot of data stored on the file system. The snapshot may include a single file, a single directory, a plurality of files within a directory, a plurality of directories, a path on the file system that includes nested files and subdirectories, or more than one path on the file system that each includes nested files and directories. According to one embodiment, the system stores and updates metadata, including a governance list, for each of the files and directories. The governance list provides a representation of the snapshots which govern a file or directory and its descendants.