How do i establish initial folder for DFS replication?

I have 3 windows 2008 servers. I have a 400gb folder sitting on server 1 that I want to replicate between all 3 servers. I took this folder and copied it to an external drive and the copied the folder from the external drive to server 1 and 2. However, once I setup DFS, DFS was trying to push the entire 400gb to server 2 and server 3 even though all of that data was already there. Microsoft told me that it was because I did a copy and paste of the folder. I guess it did something like changed the signature on the files and therefore DFS saw the files as different instead of as the same. I just wanted to check and see what the proper procedure is to copy this folder to the other servers. I can't wait for 400gb to replicate over slower wan links. I think  Microsoft said I could try using robocopy which will not change the file signatures? We have 3 2008 r2  servers.
StarfishTechAsked:
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Acosta Technology ServicesCommented:
What Microsoft suggests is true; only using Robocopy to start off a DFS 'preseeding' process using either the /MIR or /COPY:DATSOU command will keep all the attributes the same.  Copying using either Windows Explorer or XCOPY to another location will lose 1 or more of the attributes.

Here's their official article on how to preseed using Robocopy:  http://technet.microsoft.com/en-us/library/dn495044.aspx.

Alternatively, for preseeding, you can use RichCopy, the final Robocopy GUI front end from Microsoft: http://technet.microsoft.com/en-us/magazine/2009.04.utilityspotlight.aspx

Please note that even if you preseed the files, DFSR will still need to check each and every file for a CRC/hash test, so it may take a while to have the full replication working.
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Windows Server 2008

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