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IBM zPDT 2017 Sysplex Extensions by Bill Ogden, Frank Kyne

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Alternative disk configuration
The Network File System (NFS) file sharing configuration that is described in 4.6.3, “Sharing zPDT DASD across PCs” on page 83 does not deliver response times that you often experience if all of the systems that are accessing the disk were in the same PC. If the performance effect of the sample configuration is not acceptable, this appendix describes a more robust alternative.
 
Note: This configuration is appropriate for a base sysplex configuration only. zPDT does not support a Parallel Sysplex that spans more ...

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