Electrical computers and digital processing systems: memory – Storage accessing and control – Control technique
Reexamination Certificate
2004-01-09
2008-11-11
Shah, Sanjiv (Department: 2185)
Electrical computers and digital processing systems: memory
Storage accessing and control
Control technique
C711S161000, C714S006130, C714S718000
Reexamination Certificate
active
07451283
ABSTRACT:
Provided are a method, system, and program for copying tracks between a primary controller and secondary controller. A track is received from the primary controller that is part of a copy job comprising a sequence of tracks to copy along with a sequence number of the received track and a context number identifying computational resources in the primary controller used to transmit the track, sequence number, and context number. The context number and sequence number transmitted with the track are used to determine if a track preceding the received track was written to storage. The secondary-controller writes the received track to storage if the track preceding the received track was written to storage.
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Chen James Chien-Chiung
Fung Chung Man
Huynh Minh-Ngoc Le
Lu Patricia Ching
Mellgren Carol Santich
International Business Machines - Corporation
Konrad Rayner & Victor LLP
Shah Sanjiv
Victor David W.
Yu Jae U
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