Data processing: database and file management or data structures – Database design – Data structure types
Reexamination Certificate
2006-01-10
2008-08-05
Das, Chameli (Department: 4141)
Data processing: database and file management or data structures
Database design
Data structure types
C711S162000, C714S006130
Reexamination Certificate
active
07409414
ABSTRACT:
A computer system includes a host computer; a storage system for obtaining a snapshot, at a specific point in time, of a data volume, storing data written to the data volume after the specific point in time as a journal, and applying the journal to the snapshot for data recovery; and a management computer. In the computer system, the management computer instructs the storage system to determine whether data at a recovery point after a recovery point of the latest snapshot can be recovered within a specific period of time and to apply, if it has been determined that the data cannot be recovered within the specific period of time, a journal to the latest snapshot to update the latest snapshot to a new snapshot in such a manner that the data can be recovered within the specific period of time.
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Emaru Hironori
Okada Wataru
Sato Masahide
Antonelli, Terry Stout & Kraus, LLP.
Das Chameli
Hitachi , Ltd.
Koo Gary J
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