What is Hypervisor and its Role in Virtualization?

What is Hypervisor and its Role in Virtualization?

With Linux VPS Hosting gaining traction with website owners, many people are still confused about a hypervisor and its role in virtualization. In this article, we will take you through the process of virtualization and the role the hypervisor plays in it.

Virtualization

Let’s keep things simple. Virtualization is a way of generating virtual versions of a resource. You can create a virtual version of a desktop, web server, operating system, etc. It is interesting to note that we have been using virtualization for decades. Hence, the concept is not as alien as it sounds. If we look back to the origin of desktop computers, we would all remember two drives C: and D: on them. However, we didn’t have two drives on our system. It was one physical hard drive that was partitioned to appear as two virtual drives.

Virtualization is particularly helpful in the modern hosting landscape as it helps consolidate the workload by developing a network of virtual servers using a single physical server. It is a process by which the physical system is partitioned into multiple virtual machines, each having dedicated resources. Further, these virtual machines work independently of each other. Now that you understand virtualization, let’s take a look at the role of a hypervisor in the process. 

Hypervisor and its Role in Virtualization

A hypervisor is a program that helps the physical server to host several virtual machines. Using the hypervisor, you can partition the hardware and isolate different OS and applications from the physical server. 

In simple terms, a hypervisor makes virtualization happen.

It makes it easier and more efficient for the host to run and manage the virtual machines. It does so by allocating physical resources like CPU, memory, storage, etc. across the virtual machine network. The hypervisor keeps the virtual machines connected virtually and acts as a node for their communication. The server admin can start or stop a specific virtual machine using the hypervisor.

Some advantages offered by a hypervisor are as follows:

1. Enhances security

The hypervisor keeps the virtual machines and the associated accounts isolated along with their resources. Therefore, in the case of one virtual machine experiencing a cyber-attack, the others remain unaffected. On the other hand, in Shared Hosting, for example, if the server experiences a threat through any user account, all other accounts are affected.

2. Optimum Utilization of Resources

It allows the creation of virtual machines which helps site owners utilize the resources of the webserver optimally.

Summing up

If we call virtualization a boon to the hosting industry, then a hypervisor is the knight in shining armor who brings this boon to people. After going through this article, we hope that the next time you talk to a hosting provider to buy a VPS hosting plan, you will be able to understand certain technicalities with ease.

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