Electrical computers and digital processing systems: memory – Storage accessing and control – Control technique
Reexamination Certificate
2011-03-22
2011-03-22
Bragdon, Reginald G (Department: 2189)
Electrical computers and digital processing systems: memory
Storage accessing and control
Control technique
C711S161000, C711SE12103, C711S156000
Reexamination Certificate
active
07913044
ABSTRACT:
Efficient incremental backups using a change database is disclosed. Based at least in part on a file attribute it is determined that a file has changed since a previous backup. Change data is stored in a data structure additional to a file system with which a file is associated. Change data indicates the file has changed since the previous backup. The file attribute is configured to be reset, each time a file is backed up, to a value indicating the file has not changed. Storing the change data enables a backup operation performed subsequent to the file attribute being reset to determine that the file has changed since the previous backup.
REFERENCES:
patent: 6101585 (2000-08-01), Brown et al.
patent: 6366986 (2002-04-01), St. Pierre et al.
Desai Asit
Zulch Richard
Bragdon Reginald G
EMC Corporation
Faal Baboucarr
Van Pelt & Yi & James LLP
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