Electrical computers and digital processing systems: multicomput – Computer-to-computer protocol implementing
Reexamination Certificate
2006-11-28
2006-11-28
Najjar, Saleh (Department: 2155)
Electrical computers and digital processing systems: multicomput
Computer-to-computer protocol implementing
C709S217000, C709S231000, C709S236000, C709S245000, C709S248000, C710S070000, C725S115000
Reexamination Certificate
active
07143176
ABSTRACT:
A method for copying data over a network operating in accordance with a protocol, such as the ESCON protocol, that supports a given logical address range includes establishing a logical path over the network from a primary storage system to a secondary storage system using path logical addresses within the given logical address range. A virtual path is created over the logical path to carry the data from a source storage device in a first logical subsystem of the primary storage system to a target storage device in a second logical subsystem of the secondary storage system, wherein the first and second logical subsystems have respective first and second subsystem logical addresses which are outside the given logical address range. The virtual path is used in a peer-to-peer remote copy (PPRC) operation to copy the data from the source storage device to the target storage device.
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Gluck Olympia
Sharaby Gilad
Walder Gabriel
Webman Erez
Browdy and Neimark PLLC
International Business Machines - Corporation
Najjar Saleh
Wang Liang-Che Alex
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