SAP S/4HANA Administration · OS & Application Server Layout

If you're opening firewall rules for monitoring, which SAP management ports are fixed per-host and which vary per instance?

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How does /usr/sap/trans fundamentally differ from every other SAP directory, and what parameter pins it down?

You see traffic on port 8042 hitting an SAP host. Which ICM service and which instance does that imply, and via what parameter is it set?

Where should the shared transport area physically live, and what is the trade-off that drives the choice?

You're documenting startup. On Windows, what handles launching instance processes, and what Linux process is conspicuously absent?

Under which account do SAP processes actually run on Windows vs Linux — and why is that a frequent wrong assumption?

A work process short-dumped on startup. Under the instance directory, do you open the dev traces in log/ or in work/ — and what does the other one hold?

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