Systems and methods for a snapshot of data

Details Systems and methods for a snapshot of data Systems and methods for a snapshot of data

2011-05-31

2011-05-31

Trujillo, James (Department: 2159)

Data processing: database and file management or data structures

File or database maintenance

Database backup

C707S649000, C707S661000

Reexamination Certificate

active

07953704

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.

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