Hyper Virtualization What Is It Information Technology Essay

Published: 2021-07-30 06:15:06
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Category: Information Technology

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In reality, today’s data center is a sophisticated system composed of many powerful servers, with operating systems and applications that interact together. To run this system 24/7, you need a huge amount of electricity, air conditioning, powerful Uninterruptible Power Supplies and more. As a result, it takes tremendous capital investment and does great harm to the ecosystem. Indeed, IT departments are always under pressure to maintain this mission critical system by deploying and moving servers, plus assuring reliability and security. It is increasingly the primary day-to-day challenge for Administrators. In recent years, virtualization technology has come to rescue to by alleviating many administrative tasks, considerably reducing IT cost and the impact to the environment. Now, Administrators can build plenty of virtual servers in one physical server.
How does virtualization change day-to-day tasks for IT Network Administrators?
This paradigm shift is often referred to as the most important trend in the industry of information technology (Leyden, 2009). The big picture behind virtualization includes IT costs saving and increased data reliability. To ease tasks for Network Administrators and push down IT costs, Microsoft in 2008 released "Hyper-V R2" integrated to Windows Server 2008 R2. Hyper–V is the core subject of this project. This new feature assists Information Technology (IT) managers and administrators by performing and improving many of their tasks and challenges essentially in Virtual Server Live Migration, hardware and software consolidation, development and testing environments, Cluster Shared Volumes, Network Performance, Virtual Disk hot-add, and more. All those features play big part in deploying and maintaining servers, workstations, data storages, and applications. Recently, Microsoft came with a new version of Hyper- V named Hyper-V 3.0 in Windows server 2008 R2 with more flexibility and more features for the virtualization, but I limit the scope of this particular project to Hyper- V R2 in Windows Server 2008 R2. The main goal of this project is to outline how Hyper-V helps to ease administrative tasks and increase productivity for businesses. Facing increasing pressure to reducing IT costs of operations in businesses, should Hyper-V be the appropriate solution to engage safely companies in virtualization world? The following four areas of benefit retain my attention:
Infrastructure Consolidation - Live Migration
Cluster Shared Volumes
Software Test and Development Consolidation
Business Continuity and Disaster Recovery
The first exhibit focuses on Live Migration, one of the biggest improvements in Hyper V that eliminates the downtime during virtual servers ‘migration. The next exhibit is Cluster Share Volumes, a feature that fails over individual virtual machines as necessary without affecting the entire disk resource. Another important feature- Software Testing and Development Consolidation creates a safe and independent environment for software development and testing. My last exhibit is Business Continuity and Disaster Recovery. This feature dramatically reduces the number of physical servers inherit to be compromised. There are two steps to accomplish this project:
Installation and configuration of Hyper-V R2 Role on a Windows Server 2008 R2
Hyper-V management and monitoring
This was not a formal project, but my interesting in the virtualization pushed me to dig more into Hyper-V released in Windows server 2008 R2.
Hyper- V Installation and Configuration
Before working on the four exhibits referred above, it seems important for me to talk little about the Installation and configuration of Hyper-V R2 Role on a Windows Server 2008 R2 machine. The system requirements are x64 support with Hardware-Assisted Virtualization enabled on AMD-V or Intel VT. The AMD BIOS must be set to enable "No Execute" or Intel BIOS set to Execute Disable. An Adequate space for VHDs is required. Hyper- V runs only on Windows server 2008 64 bits editions. My home lab is an x64 server 2008 R2 computer (500GB HD, 4GB RAM, Intel BIOS) with two virtual servers and two desktops. Hyper- V is Windows Server 2008 role and I installed it from the Server Manager. Both following pictures show the beginning and the end of Hyper- V installation.
0Capture Hyper-V Installation
Fig 1: Hyper-V Role in Server Manager
Capture Hyper-V Installation Complete
Fig2: Hyper-V Installation Results
After the installation, I configured the Hyper-V with command line hvconfig.cmd. Obviously, I have two options to configure Hyper-V:
From Hyper –V Manager in Server Manager
From Command line hvconfig.cmd
The following window shows the output of Hyper-V configuration from hvconfig.cmd command line.
Capture Hyper- V configuration tool
Fig3: Hyper-v configuration tool
Hyper-V Management Tools
System Center Virtual Machine Manager (SCVMM)
It is a centralized and powerful management and monitoring tool for virtual machines. The SCVMM checks for problems across several VMs at once. It is a great tool for the virtual administration. For example, when we select a virtualization host server In the SCVMM interface, the result displays the list of its VMs; selecting a specific VM shows its CPU and memory usage and others. One thing I found very interesting is the incorporation of the Remote Desktop Protocol (RDP) that allows access to remote VMs from the management console.
server_diagram_6inW_bw
Fig: 4 Management System Center (source: Microsoft)
Microsoft System Center Operations Manager, SCOM 2007
This feature provides monitoring of the health and performance of the virtual machines. For example, virtual network saturation, add and remove VM network adapter, control of the network bandwidth, manage virtual memory and processor. It includes powerful tools to deal with alerts and issues that need immediate response. It is great for Microsoft infrastructure servers and application servers in the physical and virtual environment in order to increase efficiency and enabling greater control of the IT environment.
Conclusions
The growth of Virtualization is still in its early stages and has a long way to go and much to learn. I believe that it will deeply change and ease the tasks for administrators, considerably reduce IT costs and datacenters environment impacts. Decidedly, Hyper-V remains the future of the best solutions for companies to reduce IT costs and implement more reliable and scalable systems. IT departments heavily rely on Hyper-V in the following domains:
Dynamic Data Center - Live Migration
Cluster Shared Volumes
Software Testing and Development Consolidation
Business Continuity and Disaster Recovery

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