Data processing: database and file management or data structures – File or database maintenance – Synchronization
Reexamination Certificate
2011-08-30
2011-08-30
Trujillo, James (Department: 2159)
Data processing: database and file management or data structures
File or database maintenance
Synchronization
C707S639000
Reexamination Certificate
active
08010493
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. In one embodiment, the metadata comprises mini-snapshots for directories representing a path from the root of the file system to the root of the snapshot. The mini-snapshots serve as stand-ins for portions of the file system which are not included in the snapshot, but which permit access to the snapshot data in an intuitive way.
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Anderson Robert J.
Fachan Neal T.
Lemar Eric M.
Passey Aaron J.
Richards David W.
EMC Corporation
Knobbe Martens Olson & Bear LLP
Moser Bruce M
Trujillo James
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