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It will work fine. &nbsp;There are limitations <br />
<a href="http://technet2.microsoft.com/windowsserver/en/library/238ac6b7-db4f-4b1a-9ea9-9dc9d4f83d5e1033.mspx?mfr=true" rel="ugc nofollow">http://technet2.microsoft.com/windowsserver/en/library/238ac6b7-db4f-4b1a-9ea9-9dc9d4f83d5e1033.mspx?mfr=true</a><br />
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About halfway down
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thanks for reply, i didnt see it written in the article though that it would be fine to do the upgrade??
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I currently have 4 server each are on server 2000, they are using a dfs namespace currently and replicating files across a site. I plan on upgrading 2 of the server at one of the sites to 2003R2 but still need to have dfs working until I am able to upgrade the other 2 server in the next month or so. <br />
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Will DFS still work after the upgrade or does it stop if the servers are not all on the same os version...Please advise, also if possible point me to the article with this information.<br />
<br />
Thanks!
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I currently have 4 server each are on server 2000, they are using a dfs namespace currently and replicating files across a site. I plan on upgrading 2 of the server at one of the sites to 2003R2 but still need to have dfs working until I am able to upgrade the other 2 server in the next month or so. 

Will DFS still work after the upgrade or does it stop if the servers are not all on the same os version...Please advise, also if possible point me to the article with this information.

Thanks!

Will upgrading from server 2000 to 2003R2 stop dfs that currently running

The Microsoft Server topic includes all of the legacy versions of the operating system, including the Windows NT 3.1, NT 3.5, NT 4.0 and Windows 2000 and Windows Home Server versions.

Microsoft Server OS

Windows Server 2003 was based on Windows XP and was released in four editions: Web, Standard, Enterprise and Datacenter. It also had derivative versions for clusters, storage and Microsoft’s Small Business Server. Important upgrades included integrating Internet Information Services (IIS), improvements to Active Directory (AD) and Group Policy (GP), and the migration to Automated System Recovery (ASR).