Hyper-V Dynamic memory

I have a server running Hyper-V, host is  Windows 2008 Datacenter SP2.  I am trying to get dynamic memory working for the VM clients.  I notice that in the Hyper-v host manager the Current Memory and Memory Available are absent in the manager view.  Is there something I need to configure for the host to make the dynamic memory option available?    

On the VM client I have upgraded the integration services and rebooted the machine.  When I look at the settings for the client I only have the static memory option..  

Any assistance would be most appreciated.
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freerCommented:
Dynamic memory is a feature of Hyper-V in 2008 R2, so you need to upgrade the host.

Tim
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Lee W, MVPTechnology and Business Process AdvisorCommented:
What are your clients running? Not all clients support dynamic memory. What are te VM memory settings set to.  It's not used automatically, you have to give it a range.  In the hyper-v manager, right click.on a column - is there an add columns option (don't have access to a hyper-v system at the moment or I could be more definitive
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Lee W, MVPTechnology and Business Process AdvisorCommented:
Skip what I said - I missed the SP2 part - freer is correct
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James HaywoodCommented:
And upgrade to SP1!
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Windows Server 2008

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