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For my edification, why can I not do an in-place upgrade?
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For my edification, why can I not do an in-place upgrade?

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I have a system with 3 physical servers.<br />
&nbsp; &nbsp; &nbsp;1. One is running Server 2008 R2 Standard with File Server, Print Server, AD, DHCP and DNS Roles<br />
&nbsp; &nbsp; &nbsp;2. The second is running Server 2008 R2 Standard with Exchange Server 2010<br />
&nbsp; &nbsp; &nbsp;3. The third is running Server 2003 R2 with File Server, Application Server and Terminal Server Roles (Main purpose is Terminal Server)<br />
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I would like to upgrade the Terminal Server machine to Windows 2008 R2<br />
&nbsp; &nbsp; &nbsp;1. Can I still purchase Server 2008 R2?<br />
&nbsp; &nbsp; &nbsp;2. Is there anything I need to be concerned about when upgrading the Terminal Server machine?<br />
&nbsp; &nbsp; &nbsp;3. I saw documentation about upgrading that talks about running adprep before upgrading. Is this necessary on a machine not running the AD Role?<br />
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The Terminal Server hardware is Dual Xeon 5148 Dual Core processors @ 2.33GHz and 4GB RAM
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I have a system with 3 physical servers.
     1. One is running Server 2008 R2 Standard with File Server, Print Server, AD, DHCP and DNS Roles
     2. The second is running Server 2008 R2 Standard with Exchange Server 2010
     3. The third is running Server 2003 R2 with File Server, Application Server and Terminal Server Roles (Main purpose is Terminal Server)

I would like to upgrade the Terminal Server machine to Windows 2008 R2
     1. Can I still purchase Server 2008 R2?
     2. Is there anything I need to be concerned about when upgrading the Terminal Server machine?
     3. I saw documentation about upgrading that talks about running adprep before upgrading. Is this necessary on a machine not running the AD Role?

The Terminal Server hardware is Dual Xeon 5148 Dual Core processors @ 2.33GHz and 4GB RAM

Upgrade 2003 R2 Terminal Server to 2008 R2

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).

Windows Server 2003

Windows Server 2008 and Windows Server 2008 R2, based on the Microsoft Vista codebase, is the last 32-bit server operating system released by Microsoft. It has a number of versions, including including Foundation, Standard, Enterprise, Datacenter, Web, HPC Server, Itanium and Storage; new features included server core installation and Hyper-V.