Electrical computers and digital data processing systems: input/ – Input/output data processing – Input/output access regulation
Reexamination Certificate
2011-04-26
2011-04-26
Chen, Alan (Department: 2182)
Electrical computers and digital data processing systems: input/
Input/output data processing
Input/output access regulation
C710S006000, C710S019000, C710S033000
Reexamination Certificate
active
07934026
ABSTRACT:
A method to preserve a logical communication path in a data processing system, that includes a host computer, a storage controller that comprises a first logical control unit (“LCU”), and a logical communication path that is in communication with the host computer and the first LCU, comprising deleting the first LCU and setting a first status for same. The method then configures a second LCU, and establishes a second status for same, wherein the second LCU includes all or a portion of the first LCU, but is not the same as the first LCU. The deleting, setting, configuring, and establishing are performed while maintaining the logical communication path, which is in communication with the second LCU.
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Coronado Juan Alonso
Hathorn Roger Gregory
Le Dinh Hai
Perkin Daniel
Taylor Aaron Eugene
Chen Alan
International Business Machines - Corporation
Quarles & Brady LLP
Regelman Dale F.
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