Dynamic Memory is one of Hyper-V’s biggest “me too” features that could help Microsoft keep pace with VMware. Believe it or not, the ability to over-allocate memory with VMware virtualization was once a point of controversy for Microsoft, which claimed the feature was a performance drain on virtual machines. But the forthcoming Service Pack 1 for Windows Server 2008 R2 will introduce this feature, meaning the decision to efficiently utilize resources or drive performance over memory consolidation now lies with the Hyper-V administrator.
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