I am in the middle of providing an estimate for the portal upgrade project.
My portal landscape has 3 environments: Dev, QA and Prod and KM/Trex is used but we are not using Collaboration/Unification.
I know this question is not easy to answer, because it depends on so many factors, but usually there are statistics around average duration of R/3 upgrade based on sampling of upgrade projects that SAP keeps.
So is SAP maintaining such statistics and are they available?
If they are not available, based on your upgrade experiences, what is the high level estimate of an average duration of a portal upgrade project going from EP5.0 SP5 Win/SQL to NW04 Unix/Oracle?
Thanks in advance for any insights you might share with me.