Virtualization _ Virtual Machine_ Hypervisor

Virtualization

• It is an advanced software engineering concept that allows creating of virtual servers, storage, and network.

• It creates a virtual computer system.

• It helps to run more than one operating system in a single system

Need for virtualization

• It helps in data transfer, protects from system failure, reduces the cost of operation, and provides security to data.

• With the help of virtualization we can run a virtual server at a single physical server.

Virtual Machine

• virtual machines are virtual systems which are having their system and application.

• virtual machines are the software that runs in a physical system and provides virtual computers inside a physical computer.

Hypervisor

• Hypervisor creates and manages virtual machines.
• It allocates host resources to each virtual machine.
• It provides multiple guest virtual machines to share host resources.

Two types of Hypervisor

1. Type-1 or Bare- metal Hypervisor
   • It runs directly on the hardware
   • it is more secure as it is directly installed on the hardware.
   • no Operation system layer is involved so it performs better and more efficiently.

1. Type-2 or Hosted Hypervisor
   • It runs on a host operating system.
   • It is generally used on student laptops, desktops, etc.