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DaveKall42

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Server 2008 Environment Licensing Help

I have the current scenario and am hoping that someone who has much better knowledge than I do with MS licensing might be able to help me figure out what licenses I need to get.

Senario (All Virtualized Servers):

2X 2008 DataCenter Edition servers acting as DCs as well as DNS, print etc. 100 Users in environment. (These came with OS and have 1 virtual server CAL each already)
2X 2008 Standard Edition servers to be running as MS terminal servers with 50 thin clients logging in each.
1X 2008 Standard Edition server that is running Exchange 2010 for 100 user mailboxes
1x 2008 Standard Edition server running as Webserver

Any information on what licenses/CALs I need to buy would be greatly appreciated!  MS licensing is so convoluted.
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Brian Harrington
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Which ones are physical, which ones are virtual?  How many physical hosts do you have?
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DaveKall42

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Opps, forgot to add that there are 2 physical servers that are running Citrix Xen Server so all windows servers are virtual.
Go with 2 datacenter licenses.  One per physical host.  That get's you unlimited guests.  It has no effect on exchange, so whatever you would like for that.  You could consider the Core CAL which includes your server and exchange cal's all in one.
Ok, we have the datacenter licenses already for both physical or virtual.  What about licensing the other 4 servers running 2008 standard that are also virtual?
Upgrade the instances to datacenter.
right but I have 1 license for each server.  datacenter is like 3x the cost of standard and i don't need the functionality of datacenter?
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Oh gotcha, so to confirm with the 2 licenses of datacenter that we already have we can install whatever server 2008 servers we want under those two licenses.  Were you saying exchange was covered under them?

So I installed the other 4 servers as standard, can I upgrade them or do I need to reinstall?
you may be able to upgrade them.  Exchange is not covered by your datacenter license.  That is separately licensed, but I assume you already have that license.
No, I don't have the exchange license.  So I need 1 exchange  2010 server license and 1 CAL/mailbox?
What about terminal servers?  I need 1 CAL/thin client logging in concurrently?
Okay.  You'll need RDS CAL's for each user accessing terminal services. You can cover yourself on Server and Exchange CAL's using the Core or Enterprise CAL, those come with licenses for multiple Microsoft products including exchange and server, plus Lync and some other things.
So for core or enterprise CALs we would need 1 CAL for each user accessing those servers etc?  Does the enterpise CAL cover all servers involved in scenario.  I want to say I do really  appreciate your help so far!!
Yes.  You only need a cal for the domain.  Each server is covered under that.  It's rights to access server, not access a server.  Think about it, if you needed a cal for each server desktop combo, a large organization would have billions of cal's
Exactly and that is why I was trying to get this whole thing tied down.   Like I said, licensing for MS is so convoluted.  Thanks again for all your help!
Does the Enterprise CAL cover RDS just to verify?