Information Technology Reference
In-Depth Information
Hyper-V
is a server role in Windows Server 2012 R2 that
allows you to virtualize your environment and therefore run
multiple virtual operating system instances simultaneously on
a physical server. This not only helps you to improve server utilization but also helps you to
create a more cost-effective and dynamic system.
In this chapter, you will learn the basic concepts and features of Hyper-V that a
Windows Server 2012 R2 technical specialist must know. You will also get a solid
understanding of what is important in virtualization and in what areas of your work life
you can use it.
Hyper-V Overview
In the following sections, I'll introduce you to Hyper-V. To begin, you'll take a look at vir-
tualization and what types of virtualization exist. I will then discuss Hyper-V features and
the Hyper-V architecture before finishing up with the Hyper-V requirements for software
and hardware.
What Is Virtualization?
Virtualization
is a method for abstracting physical resources from the way that they
interact with other resources. For example, if you abstract the physical hardware from the
operating system, you get the benefit of being able to move the operating system between
different physical systems.
This is called
server virtualization
. But there are also other forms of virtualization
available, such as presentation virtualization, desktop virtualization, and application
virtualization. I will now briefly explain the differences between these forms of
virtualization:
Server Virtualization
This basically enables multiple servers to run on the same physical
server. Hyper-V is a server virtualization tool that allows you to move physical machines
to virtual machines and manage them on a few physical servers. Thus, you will be able to
consolidate physical servers.
Presentation Virtualization
When you use
presentation virtualization
, your applications
run on a different computer, and only the screen information is transferred to your com-
puter. An example of presentation virtualization is Microsoft Remote Desktop Services in
Windows Server 2012 R2.
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