Use Virtualization in Windows Server 2012 - MCSA Windows Server 2012 R2: Installation and Configuration Study Guide - page 448

By using Hyper-V on a Server Core installation, you can fundamentally improve
availability because the attack surface is reduced and the downtime required for installing
patches is optimized. It will thus be more secure and reliable with less management.
To install Hyper-V for a Windows Server 2012 R2 installation, you must execute the
following command in the command-line interface:

Dism /online /enable-feature /featurename:Microsoft-Hyper-V

Hyper-V in Server Manager

As with all of the other Windows Server 2012 R2 roles, the Hyper-V role neatly integrates
into Server Manager. Server Manager filters the information just for the specific role and
thus displays only the required information. As you can see in Figure 9.3, the Hyper-V
Summary page shows related event log entries, the state of the system services for Hyper-V,
and useful resources and support.

figUre 9.3 Hyper-V in Server Manager

Using Hyper-V Manager

Hyper-V Manager is the central management console to configure your server and create
and manage your virtual machines, virtual networks, and virtual hard disks. Unlike Vir-
tual Server 2005, where you managed all virtual machines through a web interface, Hyper-
V Manager is managed through a Microsoft Management Console (MMC) snap-in.
You can access it either in Server Manager or by using Administrative Tools ➢ Hyper-V
Manager. Figure 9.4 shows how Hyper-V Manager looks once you start it.