Using Hyper-V with Windows Server 2012
Windows Server 2008 R2 SP1 provided solid virtualization capabilities with features such as Dynamic Memory, Cluster Shared Volumes, and Live Migration; and all those capabilities are present in Windows Server 2012 Hyper-V, too. However, the additional changes related to Hyper-V and the complementary Windows Server 2012 features are nothing short of phenomenal. Microsoft Hyper-V Server 2012 and Windows Server 2012 provide the best platform for virtualization.
Live Migration is critical to organizations. No new feature breaks the ability to move a virtual machine between servers without downtime.
I have done a lot of Windows Server 2012 briefings, and Figure 8-14 shows the first slide I use for Windows Server 2012 Hyper-V features. It shows the main new capabilities—not all of them, just the major ones. This gives you some idea of the sheer scale of improvements in this version. In this section, I cover the major Hyper-V features introduced in Windows Server 2012 that can greatly affect how machine virtualization is implemented in your organization and how it stacks up against the competition.
Four virtual CPUs and 64GB of memory per virtual machine seemed like plenty when Hyper-V was first introduced, as did 2TB VHD files; but as larger workloads are being virtualized, ...