Upgrade server 2008 r2to Server 2012 with DFS role

I have 3 file servers with Windows Server 2008r2 and they use DFS to replicate the file shares.

i want to upgrade them one by one to windows server 2012.

if i upgrade them - will it cause any issues with DFS - downtime is not a issue as long as it works afterwards
oasisukAsked:
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MaheshConnect With a Mentor ArchitectCommented:
There are two approaches:
1st is to introduce new 2012 member server in existing DFS farm as new namespace server, add new name space servers to all folder targets, add replica of existing folders and after initial sync and replication completed, remove 2008 R2 server from DFS farm completely

2nd approach is I think what you wanted to do ?
Not sure if you can upgrade 2008 R2 server to 2012 with DFS replica ?
Best option is to remove 2008 R2 server from DFS replica, remove from name space servers and DFS, upgrade it to 2012 server,  add it as DFS name space server for all folder targets, create DFS replica and allow for initial sync and replication

http://social.technet.microsoft.com/Forums/en-US/2f8bb88a-d6df-44ed-b6b0-6f75920bea67/move-dfs-from-windows-server-2008-r2-to-windows-server-2012?forum=winserverfiles

Mahesh
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oasisukAuthor Commented:
good
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