• Migrate Frs To Dfrs

To migrate to DFSR, the domain functional level must be in 2008, the AD environment must be in good health (dcdiag). When increasing the domain functional level, the FRS to DFSR migration is not automatic, Microsoft provides a migration tool (dfsrmig.exe) on the domain controllers.

All your DCs will have to be at least 08 with a DFL of at least 08.

It will not affect non-DCs. This is for Sysvol replication only.

Also, make sure AD is healthy before continuing.

For streamlined migration:

https://blogs.technet.microsoft.com/filecab/2014/06/25/streamlined-migration-of-frs-to-dfsr-sysvol/

Make sure to read and pay attention to the assumptions.

If you are not completely familiar with them then read the full guide.

Migrate Frs To Dfrs

https://docs.microsoft.com/en-us/previous-versions/windows/it-pro/windows-server-2008-R2-and-2008/dd...