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You are here: Home » All About Virtualization

By Abhishek Ghosh February 26, 2013 12:24 pm Updated on August 30, 2014

All About Virtualization

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All About Virtualization is a comprehensive article on various aspects of Virtualization, be it server or desktop as well as the associated terminologies. Unlike traditional systems, Server Virtualization directly related to the physical processor and the main memory of the host hardware. Simply video card, network adapter, hard disk controller and peripheral being emulated. There are some manufacturers can create the software to connect hardware directly to the virtual machine. In this case, users lose the mobility of the VM. This means that they are no longer in a position to move a VM to the current operation to a different host.Through the use of logical devices, a hardware independence is achieved.

 

All About Virtualization : Introduction

 

One drawback has been in the virtualization is,  as the guest works from the physical processor Knowing the operating system’s corresponding works, is an active migration between host systems with processors from different manufacturers – such as AMD and Intel, is not possible. When server virtualization is possible to identify three different approaches: full-virtualization, para-virtualization and operating system virtualization. With the introduction of processor virtualization technology (AMD-V, Intel VT-x), which are especially used as an extension through paravirtualization software, a subspecies of the complete virtualization has emerged.

 

All About Virtualization

 

All About Virtualization

 
Virtualization separates software applications, etc. from the underlying hardware (servers, memory) by a logical layer. IT infrastructure consists of only one or two systems, then the virtualization and consolidation of servers and peripherals not particularly interesting. Where there are dozens or hundreds of servers that can be used, that depends on the virtualization solution, but a realistic consolidation ratio is of 1:5 to 1:100. Thus, the operating costs (energy, space, air conditioning) and the maintenance and administration costs for the hardware drop significantly. Moreover, the life cycle of applications decoupled from the hardware and therefore it increases the lifespan of the systems. The high consolidation ratios are due to the low average utilization of physical servers that are operated with a single operating system and usually very few applications.

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Using so-called Resource Manager, both virtual machines are prioritized (VM) compared to other VMs and the physical hardware to be partitioned according to many different criteria. Through intelligent resource management, it can be achieved with a symbiotic relationship between resources and consolidation while optimizing the performance of applications.

 

Another plus point is that, by introducing a virtualization layer between physical hardware and logical components (guest operating system and application) is achieved as fully hardware independently. It opens up new backup options and simplifies like recovery of the guest operating systems considerably. The latter is not spatially restricted, so that the virtual machines are distributed over the Internet.

 

There are over 200 articles on this website on Virtualization. The most important articles are :

 

  • Kernel Based Virtual Machine (KVM)
  • Server Virtualization Technology
  • Virtualization Software for Server, Workstation and Desktop
  • Virtualization Monitoring Tools
  • Server Virtualization and Intel VT-x Processor
  • Server Partitioning and Virtualization
  • Paravirtualization Basics
Tagged With all about virtualization

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Abhishek Ghosh

About Abhishek Ghosh

Abhishek Ghosh is a Businessman, Surgeon, Author and Blogger. You can keep touch with him on Twitter - @AbhishekCTRL.

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About This Article

Cite this article as: Abhishek Ghosh, "All About Virtualization," in The Customize Windows, February 26, 2013, January 31, 2023, https://thecustomizewindows.com/2013/02/all-about-virtualization/.

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