This management pack adds first level of monitoring for the Dynamic Memory feature that shipped with Hyper-V in Windows Server 2008 R2 SP1.
It detects which virtual machines are Dynamic Memory-enabled, and adds a subclass to these VMs to monitor and tracks Dynamic Memory usage. One monitor specifically rolls up at the performance level for the VM object, and several performance counters provide more detailed information. See the sample screenshots section of this guide.
Note that while this community MP provides better insight on how Dynamic Memory is being used and can be useful for virtualization administrators, it is not mandatory for a good monitoring experience of Dynamic Memory-enabled machines. The guide gives examples how the Core OS MP copes with memory management to avoid unwanted noise whether or not Dynamic Memory is enabled.
See http://blogs.technet.com/b/yasc/archive/2011/10/18/dynamic-memory-management-pack.aspx for more details and screenshots