Migrating from terminal services to Remote Desktop Services

Hello Experts:

I am retiring my existing 2003 terminal services server on which I have 50 terminal servers licenses installed. I am purchasing a 2012 server, and understand that terminal services has been replaced by remote desktop services.  My question is -- when I scale and purchase the new server, will I need to also purchase 50 remote desktop services licenses, or can I migrate the licenses from the 2003 server to the 2012 server?  


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Cliff GaliherCommented:
You will need 2012 windows CALs and 2012 RDS CALs. CALs never grant rights to newer versions than the CAL version.
MagicFarmerAuthor Commented:
Thanks Cliff for your quick reply
I have five servers in this environment, the application, phone and web servers are on 2012 and my DC is 2008, with 50 windows CALS.  Since I plan on using the RDS server to connect to the application server(s), will I need both windows and RDS CALS for the new server or can I continue to use the windows cals from the DC?

Cliff GaliherCommented:
As always, advice here is not legally binding. You probably should call Microsoft pre-sales support to get a definitive answer for your environment and country-specific laws.  However in most cases, as long as you already have 2012 CALs (there is no such thing as CALs "from a DC") then those CALs cover access to all 2012 servers in the domain.  So you'd only need new RDS CALs.  If, however, your current windows CALs are only 2008 CALs, then you'd need 2012 windows CALs.  Your question was worded oddly and didn't include current CAL versions, so that is as specific as I can get at the moment.

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MagicFarmerAuthor Commented:
Thanks Cliff -- you've been very helpful.
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