Inventors:
Juan Alonso Coronado - Tucson AZ, US
Roger Gregory Hathorn - Tucson AZ, US
Dinh Hai Le - Tucson AZ, US
Daniel Perkin - Tucson AZ, US
Aaron Eugene Taylor - Tucson AZ, US
Assignee:
International Business Machines Corporation - Armonk NY
International Classification:
G06F 3/00
G06F 13/00
US Classification:
710 38, 710 6, 710 19, 710 33
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.