Time based file system for continuous data protection

Details Time based file system for continuous data protection Time based file system for continuous data protection

2011-07-12

2011-07-12

Le, Uyen T. (Department: 2157)

Data processing: database and file management or data structures

File or database maintenance

Database recovery

C707S661000, C707S822000

Reexamination Certificate

active

07979401

ABSTRACT:
Tokens corresponding to data units written to a rewritable file system are stored, where an ordering relationship is maintained among the tokens, where the ordering relationship is such that a first token corresponding to a first data unit is of a lesser numerical value in comparison to a second token corresponding to a second data unit, and where the first data unit is written at an earlier point in time in comparison to the second data unit. The rewritable file system is reverted to an indicated point in time based on the ordering relationship that is maintained among the stored tokens.

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