Data processing: database and file management or data structures – Database design – Data structure types
Reexamination Certificate
2008-03-25
2008-03-25
Woo, Isaac (Department: 2166)
Data processing: database and file management or data structures
Database design
Data structure types
C707S793000
Reexamination Certificate
active
10072437
ABSTRACT:
A back up storage device (20) that backs up non-compressed data during a backup window period and then later after the backup window period is over and the device (20) is idle, it retrieves, compresses and then re-stores the data to reclaim space on the storage medium of the device (20). During operation, a duty cycle having a backup window period and an idle period is defined. When the back up window starts, data is down-loaded and stored on the device (20) in non-compressed form. When the idle period begins, the non-compressed data is retrieved, compressed and then re-stored on the device (20) to reclaim space on the storage medium of the device (20). In one embodiment of the invention, the back up storage device (20) is an emulated tape drive (20) that uses a software compression algorithm to compress the data stored in the device (20).
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European Search Report for European patent application No. EP 03250749 filed on Feb. 5, 2003, 3 pages.
Broder James P.
Quantum Corporation
Roeder Steven G.
Woo Isaac
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