I've been tasked to upgrade our File Servers from 2008 R2 to 2012 R2.  Currently, we're using DFS to share out about five folders (about 4 GBs of data per folder) on about 6 File Servers.  These File Servers are in different physical sites, and their Internet speeds are very slow (download is like 3 Mbps, upload is like 1.5 Mbps).  They do have WAN accelerators though (Riverbeds) at some sites with slower WAN links.  I'm worried about creating the DFS replication groups, especially because I don't know how long it'll take for the replication to finish across all sites.  I'm not sure if I should be throttling the replication schedule so that way the sites don't suffer too harshly.  I was also hesitant to seed the File Servers ahead of time because I've run into revision problems before...

Anyway, can someone provide me some ideas on how to migrate DFS from one set of File Servers to another set of File Servers?  I'm not sure if you folks have a check list for this?  

Add a new server & use Robocopy.

robocopy.exe "\\srv01\e$\rf01" "d:\rf01" /e /b /copyall /r:6 /w:5 /MT:64 /xd DfsrPrivate /tee /log:c:\temp\preseedsrv02.log

See this - https://technet.microsoft.com/en-us/library/dn495044.aspx

Latter you can remove the old server.

Hi Biswajit,

Why did you exclude the directory: DfsrPrivate?  

Hi,

Because it includes database files and pre-existing files. Copy these files to a new DFS server will cause issues in initial replication.