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1 Hyper-V virtualization on 13th October 2013, 12:44 am

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Virtualization is rapidly becoming the essential foundation for today’s datacenter
  environments  Both private and public cloud computing are based on virtualization
technologies, as is the emerging virtual desktop infrastructure (VDI) paradigm that can
provide benefts beyond those provided by traditional desktop computing for certain
scenarios  Being able to implement and manage a virtualization infrastructure, therefore, is
becoming a key job role for datacenter administrators 
The Hyper-V server role of Microsoft Windows Server provides an out-of-the-box
  platform for virtualizing both server workloads and virtual desktops  The numerous
  enhancements and improvements made to Hyper-V in Windows Server 2012 now make it
easier than ever to deploy, confgure, manage, and maintain an organization’s virtualized
computing infrastructure  This chapter demonstrates how to deploy and manage virtual-
ization hosts and virtual machines using both the GUI administration tools and Windows
PowerShell cmdlets included in Windows Server 2012.

  ■ You need to know how to perform a clean install of Windows Server 2012 and
perform initial confguration tasks like confguring the server’s TCP/IP settings for
Internet connectivity 
  ■ You should have some familiarity using Hyper-V Manager to manage hosts running
Windows Server 2008 R2 or Windows Server 2008  
  ■ You also should have at least rudimentary knowledge of using Windows PowerShell
on earlier versions of Windows Server

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2 Deploying and confguring Hyper-V hosts on 13th October 2013, 12:47 am

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The frst step in implementing a virtualization infrastructure is deploying and confguring
the servers that will host your virtualized workloads  For the Windows Server platform, this
means being able to plan, install, and confgure Hyper-V hosts  This lesson helps you under-
stand the issues and considerations involved in planning host deployment  The lesson also
demonstrates how to confgure storage and networking for Hyper-V hosts.  
Planning Hyper-V deployment
Successful deployment requires careful planning ahead of time to ensure problems don’t
arise during or after the deployment process  The following issues should be considered when
planning the deployment of Hyper-V hosts within your datacenter:
  ■ Hardware
  ■ Editions
  ■ Networking
  ■ Storage
  ■ Management
  ■ Security
  ■ Scalability
  ■ Availability
  ■ Mobility
  ■ Disaster recovery
In addition, each of these issues should be considered from both the host and virtual
machine perspective before you begin to deploy Hyper-V hosts within your datacenter  While
the sections that follow focus mainly on considerations relating to planning host machines,
some mention of planning for virtual machines is also included where appropriate, especially
when it directly relates to host-planning issues 
Hardware
A key hardware requirement for a Hyper-V host is that the underlying host system sup-
port hardware-assisted virtualization such as Intel Virtualization Technology (Intel VT) or
AMD   Virtualization (AMD-V) technologies  In addition, hardware-enforced Data Execution
  Prevention (DEP) must be available and enabled on the host system. Specifcally, this means
that the Intel XD bit (the execute disable bit) or AMD NX bit (the no execute bit) must be
enabled 
Although you can install the Hyper-V role on a Windows Server 2012 server that meets
the minimum system requirements of a single-core, 1 4-GHz CPU and 512 MBs of RAM,
you probably won’t be able to run any virtual machines on that host machine  This is mainly
because each virtual machine you run on a host requires a minimum amount of RAM that
depends on the guest operating system installed in the virtual machine  In other words, the
number of virtual machines and types of virtualized workloads you can run on Hyper-V hosts
directly relate to the available hardware resources of the host 
To plan your host hardware, you therefore should start with the maximum supported
  processor and memory capabilities of Windows Server 2012, which are as follows:
  ■ Up to 64 physical processors (sockets) per host
  ■ Up to 320 logical processors (cores) per host
  ■ Up to 4 TBs of physical memory per host
Next, you should consider the maximum supported processor and memory capabilities for
virtual machines running on Windows Server 2012 Hyper-V hosts  These are as follows:
  ■ Up to 64 virtual processors per virtual machine (up to a total of 2048 virtual processors
per host)
  ■ Up to 1 TB of physical memory per virtual machine
  ■ Up to 1024 active virtual machines running on the host
Finally, you must decide how many virtual machines you want to run on each host  In
  deciding this, you must consider the following:
  ■ How many cores you can afford when you purchase your host systems
  ■ How much physical memory you can afford for your host systems
  ■ How much processing power and physical memory your virtualized workloads will
need for them to meet the performance requirements of your service level agreement
(SLA)
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3 Hyper-V hosts Configuration summary on 13th October 2013, 12:50 am

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Key considerations for planning the deployment of Hyper-V hosts include hardware,
editions, networking, storage, management, security, scalability, availability, mobility,
and disaster recovery  
 ■ The Hyper-V role can be installed and confgured using either the Hyper-V Manager
snap-in or Windows PowerShell
 ■ Whenever possible, you should deploy Hyper-V on Server Core installations and
 manage your hosts using Windows PowerShell  
 ■ Confguring virtual machine storage for a host involves specifying the location where
virtual machine confguration fles and virtual hard disk fles will be stored.
 ■ Confguring virtual networking for a host involves creating and confguring virtual
switches of the type and number needed by your environment.


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