Electrical computers and digital processing systems: memory – Storage accessing and control – Control technique
Reexamination Certificate
2006-01-03
2006-01-03
Peikari, B. James (Department: 2189)
Electrical computers and digital processing systems: memory
Storage accessing and control
Control technique
C714S006130, C714S005110
Reexamination Certificate
active
06983352
ABSTRACT:
A system and method for performing a point in time backup is presented. A backup application initiates a point in time backup whereupon a backup tracker monitors write requests during the point in time backup. The backup tracker logs data block locations that have already been backed up whose content changes in response to a write request. After a first pass of backing up data blocks, the backup application backs up the changed data blocks. During the changed data block backup procedure, the backup application invokes a copy on write command for particular changed data blocks that receive write requests prior to their content being backed up. The copy on write command stores the particular changed data block's content in a temporary storage area in which the backup application retrieves when the backup application is ready to backup the particular changed data blocks.
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Keohane Susann Marie
McBrearty Gerald Francis
Mullen Shawn Patrick
Murillo Jessica
Shieh Johnny Meng-Han
Dawkins Marilyn S.
Peikari B. James
Vanleeuwen & Vanleeuwen
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