HI Christoph,
In my current EH&S Roll-out project (complete new SAP-EH&S installation) we decided to use the Synchronous WWI Server for displaying reports (CVD1, CG02->Report from Template, CG50 CG54 etc.).
So far - we have not gone life yet - it is working without issues.
We did set up the synchronous WWI-Servers/Services on the same Windows Server as the 'normal' WWI Services (Final Report Generation / Raw Report Generation).
Performance is a bit slower - as the documents needs to be send around a bit more:
- SAP -> WWI Server -> SAP -> Local PC
versus
- SAP -> Local PC
but in my opinion acceptable.
The other nice thing with the synchronous WWI Server is that you can display PDFs right away.
On our system the part of the WWI generation that takes place on the SAP System (value file generation etc.) takes anyhow 2/3 of the overall generation time.
As WWI can now run several MS Word instances at the same time I think you just might be able to add them to your already existing WWI Servers.
It all depends on how many people in you company are displaying reports simultaneously.
Give it a try on your test system - it is easy to set up with CGSADM. All you need is one RFC (for all synchrons WWI Server is needed).
Greets
Mark