Electrical computers and digital processing systems: multicomput – Remote data accessing
Reexamination Certificate
2008-06-30
2010-10-26
Abdullahi, Salad (Department: 2457)
Electrical computers and digital processing systems: multicomput
Remote data accessing
C709S213000, C709S248000, C711S162000, C707S999202
Reexamination Certificate
active
07822827
ABSTRACT:
A system and method for writing and reading blocks of a data volume are disclosed. The method provides continuous data protection (CDP) for a data volume by backing up blocks of the data volume in real time to a local CDP log and transmitting the blocks over the Internet for storage in a remote CDP log on a server computer system in response to write requests that change the blocks of the data volume. In response to a read request for a particular block the method attempts to read the block from the data volume. If the block is not present in the data volume the method attempts to read the block from the local CDP log. If the block is not present in the local CDP log the method request the server computer system to read the block from the remote CDP log and return the block.
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Salli Tommi
van Rietschote Hans F.
Abdullahi Salad
Meyertons Hood Kivlin Kowert & Goetzel P.C.
Symantec Corporation
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