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I currently have server 2008 SP2 installed on my Hyper-V host server. &nbsp;I would to upgrade to Server 2008 R2. &nbsp;I have 5 virtual servers on this host server. &nbsp;Do I just shut down the Hyper-V virtual servers and then upgrade the host to server 2008 R2? &nbsp;Thanks.
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I currently have server 2008 SP2 installed on my Hyper-V host server.  I would to upgrade to Server 2008 R2.  I have 5 virtual servers on this host server.  Do I just shut down the Hyper-V virtual servers and then upgrade the host to server 2008 R2?  Thanks.

Upgrading Server 2008 SP2 to Server 2008 R2 on my Hyper-V Host Server

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.

Windows Server 2008

Virtualization is the act of creating a virtual (rather than actual) version of something, including (but not limited to) a virtual computer hardware platform, operating system (OS), storage device, or computer network resources. Virtualization is usually the creation of a system that executes separate from the underlying hardware resources, or the creation of an entire desktop for systems located elsewhere, similar to thin clients.