z/OS MVS Setting Up a Sysplex
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Establish data sharing among MVS virtual machines

z/OS MVS Setting Up a Sysplex
SA23-1399-00

Working allegiance simulation must be used when running two or more MVS™ guests as part of a sysplex configuration using z/VM® Guest Coupling Simulation support. The WRKALLEG operand on the MINIOPT directory statement or the CP SET WRKALLEG command must be used for any minidisk containing CFRM data sets to maintain cross-system lock integrity (and thereby, data integrity) within the sysplex.

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