In fact, quite a number of new installation base of JDE E1 8.12 by SQL Server + Windows 2003 Enterprise server ( Unix with Oracle about 15%, AS/400 with DB2/400 about 40% ( from World to E1 ), the rest of installations are based on Windows platform and SQL server DB ( Linux is ver rare ).
Served as JDE CNC consultant for a few years and implemented JDE in AS/400, HP-UX and Windows various platforms before. JDE on Windows platform is ealier way to be implemented compared with the rest of OS.
No matter what kind of "Enterprise Server" in JDE E1 you prefer (AS/400, Windows, Unix, Linux ), the "Deployment server" of JDE E1 running in Windows Server platform is a must. Since all of JDE binary codes ( installation, ESU, ASU & patches ), Workbenchmark tools and advance the objects from Pristine, Test/CRP--conference room pilot run, development and Production environments have to run in Windows platform + MS Visual Studio C++ compilier.