Decoding the Hypervisor Technology

IT is the centre of all the technological advancement in the world. It has made our jobs easier but increased the complexity on the back end. When the complexity of a system increases, it sometimes plummets the efficiency of the operations performed. Now, to improve efficiency, we need to solve the complexity and make it simple. But that may sometimes lead to increased cost.

Hypervisor technology takes care of both performance and cost. It helps in achieving high performance without increasing the cost, making the IT infrastructure simple.

If you are wondering what Hypervisor technology is, you are in the right place. We will be decoding hypervisor technology and see how it works in detail.

Many hosting providers are offering these services, especially when it comes to VPS Hosting. VPS servers provide a great deal of flexibility for a user with the performance that matches dedicated servers. These VPS servers are using Hypervisor technology to share the hardware resources according to your need, and still give you the feel of having a dedicated server. So, let us understand the Hypervisor technology in detail since it is a fundamental concept in IT infrastructure.

What is Hypervisor Technology?

By definition, a hypervisor is a process that isolates a computer software and operating system from the underlying physical hardware.

Hypervisor technology is the main reason why virtualization came into existence. Virtualization allows the host machine to run various virtual machines as a guest and maximize the use of the memory, network bandwidth, and CPU cycles.

Reasons for using Hypervisor and Virtualization

Hypervisor and virtualization techniques were used by the mainframe computers developed by IBM in the 1960s and 1970s. It was used to build time-sharing systems and exploring hardware concepts. Hypervisor technology gave them an opening for performing high-end operations and testing debugging software without ruining the overall performance and stability of their host system. It also helped them in saving up on the costs needed to deploy such development systems.

As time passed, the UNIX based operating system also started utilizing hypervisor technologies in their operating systems. Various reasons for the growth of hypervisor and virtualization are as follows:

  1. Better hardware capabilities
  2. Cost control efforts leading to consolidation of servers
  3. Enhanced security and reliability

The three most important questions were solved by Hypervisor technology, namely, performance, costs, and security. Hence, they quickly gained popularity in the industry.

How does it work?

Hypervisors, in easy words, helps in creating multiple virtual machines on one single host computer. Every virtual machine can have its operating system and set of applications. A hypervisor helps you access multiple virtual machines on a single physical computer.

The server will have first to execute the hypervisor. It will allocate proper CPU resources, memory, bandwidth, and disk storage for each virtual machine.

The two major types of hypervisors are Embedded or Hosted hypervisors, and Bare-metal or native hypervisors.

  1. Bare-metal or Native hypervisors
    Bare-metal or native hypervisors are the ones that run on the host’s hardware to control the system and run the virtual machine on it.

  2. Embedded or Host hypervisors
    Hypervisors installed as software on an operating system are known as Embedded or host hypervisors. VMWare Workstation or VirtualBox are examples of embedded hypervisors.

Which one is better?

If security and performance is your concern, try out the Bare-metal hypervisors that are directly installed on the hardware. They are faster, more secure, than its counterpart.

On the other hand, Host or Embedded hypervisors are relatively slow since it requires operating system support. It is slower due to the operating system layer. It is easy to set up a hosted hypervisor as you have an operating system for your convenience.

Final words

With so much going on with the hypervisors and virtualization, hosting providers have been using it to their full advantage. VPS hosting providers in India have been using it to deliver superior performance and flexibility that dedicated servers offer. But, the downside of owning a dedicated server is that it adds up to the cost. You can use Virtual Private Server Hosting since it provides the flexibility, root access and dedicated resources and more at rates slightly expensive compared to Shared Hosting but extremely cheap compared to Dedicated Hosting. Do let us know your thoughts and queries about hypervisors and virtualisation in the comment section below.