Electrical computers and digital processing systems: multicomput – Computer network managing – Computer network monitoring
Reexamination Certificate
2002-05-16
2009-06-09
Follansbee, John (Department: 2451)
Electrical computers and digital processing systems: multicomput
Computer network managing
Computer network monitoring
C709S226000
Reexamination Certificate
active
07546364
ABSTRACT:
Consistent updates are made automatically over a wide-area IP network, concurrently with read-only access to the remote copies. A replication control protocol (RCP) is layered over TCP/IP providing the capability for a remote site to replicate and rebroadcast blocks of the remote copy data to specified groups of destinations, as configured in a routing table. A volume multicast layer over RCP provides for multicasting to specified volume extents of the blocks. The blocks are copied at the logical level, so that it does not matter what physical structure is used for storing the remote copies. Save volumes buffer the remote copy data transmitted between the primary or secondary file system volume and the IP network, in order to ensure independence between the replication process, the IP transport method, and the primary file system being replicated.
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Angelone Raymond A.
Armangau Philippe
Bergant Milena
Bono Jean-Pierre
Gupta Uday K.
Auchterlonie Richard C.
EMC Corporation
Follansbee John
Novak Druce & Quigg, LLP.
Tang Karen C
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