Hi,
Yeah, There's a reason for it. I'm actually no longer working in education. I now work for a 24/7/365 manufacturing firm. We don't get downtime. Data is worked on all the time, So DFSR is the option to use. Also DFS has been used like this before. just for some reason on our live environment it won't let me enable windows 2008 mode for the name space.
Currently, I don't think it's going to cause me an issue, Not sure yet. We've managed to get replication groups to work now: It was a service restart and a historic permissions issue. way back before any of my team had started working for the company. when they setup the common data area, they removed "SYSTEM" from permissions. we didn't even think to check at first, then we saw a specific event log start showing. googling that error we got ourselves on the right track and fixed it.
Even without our 2008R2 box in the loop. it doesn't let you enable 2008 mode. going to look into someone else' suggestion about domain config. because I built our test environment and it works fine. Neither of us created the live domain.
Either way. We've achieved what we needed regarding Live migration using DFSR after fixing permissions issues and restarting the two services. Just wanted to share our findings