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Table of contents
1.
Introduction
2.
Server Virtualization
3.
Kinds of Server Virtualization
4.
How does Server Virtualization work?
5.
Advantages of Server Virtualization
6.
FAQs
7.
Key Takeaways
Last Updated: Mar 27, 2024
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Server Virtualization

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Introduction

Virtualization is a mechanism for decoupling a service from the actual delivery of that service. It is the process of producing a virtual representation of a physical object, such as computer hardware. It was created back when mainframe computers were still in use. It entails the use of specialized software to generate a virtual or software-created replica of a computer resource rather than the real thing. Virtualization allows different operating systems and applications to operate on the same computer and hardware at the same time, enhancing hardware usage and flexibility.

Server Virtualization

Creating and abstracting several virtual instances on a single server is known as server virtualization. Server virtualization also hides the quantity and identity of individual physical servers, CPUs, and operating systems.

Computer hardware and software were often designed to serve a single application in the past. This frequently required servers to perform a single task, resulting in the waste of underutilized processors, memory, and other hardware resources. As additional apps and services were deployed across the corporation, servers grew exponentially. With rising prices and increased demands for space, power, cooling, and connection, data centers were pushed to their limitations.

All of this changed when server virtualization was introduced. As a result, server virtualization is the act of using software to divide a physical server into numerous unique and separate virtual servers. Each virtual server is capable enough to run its operating system.

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Kinds of Server Virtualization

  1. Full Virtualization:  A hypervisor, a form of software that interfaces directly with a physical server's storage space and CPU, is used in full virtualization. The hypervisor maintains track of the actual Server's resources while keeping each virtual Server separate and oblivious of the others. It also transmits resources from the real Server to the appropriate virtual server as it executes programs. The most significant drawback of Full Virtualization is that each hypervisor has its processing requirements. This can cause programs to slow down and impact server performance.
  2. Para-Virtualization: In contrast to Full Virtualization, Para-Virtualization entails the entire network cooperating as a single entity. Because each operating system on the virtual servers is aware of one another through para-virtualization, the hypervisor can manage the operating systems with less computing power.
  3. OS-Level Virtualization: Unlike full and para-virtualization, OS-level visualization does not need the usage of a hypervisor. Instead, the physical Server's virtualization capabilities, which is part of the operating system, fulfill all of the functions of a hypervisor. All servers have to run the same operating system in this server virtualization strategy.

We have learned about the types of Server Virtualization, Let’s move to understand their working.

How does Server Virtualization work?

The Servers in Server Virtualization are entirely dedicated to a single purpose. Each virtual server works as if it were a physical device with its operating system. The software administrator can convert one physical server into several virtual servers.

Later, these several servers will be able to utilize all of the computers' processing power.

The computer's CPU can handle a variety of processors, allowing it to effectively handle a variety of complex tasks.

Read more, Cloud Computing

Advantages of Server Virtualization

Virtualization provides a wide range of technological and financial benefits. A few of the most essential and often used virtualization advantages are:

Consolidation of servers: Because virtualization allows a single physical server to perform the functions of numerous others, the total number of servers in an organization can be lowered. Server consolidation is the term for the procedure. Assume there are presently 12 physical servers, each hosting a single application. With the introduction of virtualization, each physical Server could now host three virtual machines (VMs), each of which would execute a different application. To execute the same 12 workloads, the firm would only need four physical servers.

Simplified Physical Infrastructure: The number of racks and cables in the data center drastically decreases with fewer servers. This makes deployments and troubleshooting much more accessible. The firm can achieve the same processing goals with a fraction of the physical server complement's space, power, and cooling requirements.

Lower Hardware and facility expenses: Server consolidation decreases the cost of data center hardware and infrastructure and the cost of electricity and cooling. Server consolidation via virtualization is a critical cost-cutting strategy for enterprises with huge server counts.

Greater server flexibility: Because each VM is its separate instance, it must run its operating system. On the other hand, the OS can differ amongst VMs, allowing the company to run any combination of Windows, Linux, and other operating systems on the same physical hardware. Traditional physical server installations lack this level of flexibility.

Improved management: Modern virtualization offers plenty of tools and capabilities that give managers more control and supervision over the virtualized environment.

We are done with the blog, lets’ move to FAQS.

FAQs

  1. What is Server Virtualization?
    The practice of separating a physical server into numerous unique and separated virtual servers using a software application is known as server virtualization.
  2. Why is Server Virtualization critical?
    Server virtualization reduces expenses by maximizing the use of available resources. This decreases the number of physical servers required, lowers administrative expenses, and reduces the energy required to power the servers while also providing cooling.
  3. How does server virtualization work?
    Server virtualization works by abstracting or separating the hardware of a computer from any software that could run on it. A hypervisor, a specialized software product, accomplishes this abstraction.
  4. What are the three kinds of server virtualization?
    The three kinds of Server Virtualization are Full Virtualization, Para-Virtualization, and OS-Level Virtualization.
  5. What is OS-Level Virtualization?
    OS-level visualization does not need the usage of a hypervisor. Instead, the physical Server's virtualization capabilities, which is part of the operating system, fulfill all of the functions of a hypervisor. All servers have to run the same operating system in this server virtualization strategy.

Key Takeaways

In this article, we have extensively discussed Server Virtualisation and its kinds, how it works, and its advantages.

We hope that this blog has helped you enhance your knowledge regarding Server Virtualization and if you would like to learn more, check out our articles in the code studio libraryTake a look at the interview experiences and interview bundle for placement preparations. Do upvote our blog to help other ninjas grow. Happy Coding!

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