Dear Roger
this confirms my doubts "I do not believe that the "number of wwi serves" is the difference to look at. But currently no "real" idea regarding this finding".
For what is called "GLM+": you need to activate the corresponding Business Function or you cannot use the new functionalities. As explained: there is a very good OSS consutling note existing for the overall GLM etc. part "Sizing EHSM Global Label Management in SAP ERP 6.0 Enhancement Package 5/6/7"
Here you will get a quiet jince picutre with the system set up.
If you read this may be you get the question to "Having tried print through LPT tool, can you please suggest me whether we should now also try for SAP spool print or Direct print (I read this is available now??) What is the difference between two??"
In context: Also, should I set-up Synchronous generation servers or asynchronous?
The answer is not that "easy". If you look on WWI cookbook. for GLM part you need "synchron" WWI.
But in my opinion this is "misleading" a little bit (check the refercne below for "synchronous server" . But this depends on how you set up the WWI process and what "blue print" you use for GLM. In most cases the raw report must be generated before you can print the document.
So for real print part you use the synchron WWI server. And the set up is not "well lunderstood"
C.B.
PS: may be read as well WWI Performance Improvement
GLM+ print request functionality
SAP GLM Print Request - Load Balancing of WWI server
synchronous server (EHS) (SAP Library - Glossary)
https://www.consolut.com/en/s/sap-ides-access/d/s/doc/YY-EHS_GLM_PRINTERMAI_2&prev=search
Does ehp7 in sap ehs prints file without using glmpt tool
PLeese use glmPT.exe as search termn here and with "google" you will find some discussions on this tool