Mike Schwab wrote:
>How about compiling at all ARCHLEVELs, then letting the installation
>pick which level to install. Have the install program issue a warning
>if the current machine does not meet the ARCHLEVEL selected.

I like the core of your idea. All levels might be too much to manage (7
model generations with IBM's currently supported z/OS releases), but
shipping this trio could make commercial sense (as an example):

Level C: Runs on all IBM supported z/OS releases (currently z900/z800
systems or higher)
Level B: Runs on most recent three model generations (currently z196, z114,
zEC12, zBC12, and z13)
Level A: Runs on current model generation (currently z13)

Level A, B, or C could be chosen based on a parameter, post installation.
That'd be safer for DR purposes, for example.

Level C is "universal," Level B is "all possible Parallel Sysplex system
configurations incorporating the current model," and Level A is "current
model." Level B is also "performance optimized during migration steps to
current model," and Level A is also "performance optimized for current
model."

--------------------------------------------------------------------------------------------------------
Timothy Sipples
IT Architect Executive, Industry Solutions, IBM z Systems, AP/GCG/MEA
E-Mail: [email protected]

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