Day-3 : Virtual machines, Servers, Hypervisor

Today I learned about Virtualization and how it works and also about Servers ...!!

The way he explains us in such a way that even a rookie can understand everything he says... with real-time examples...

Key topics are:

What is a Server ?

A server is a software or hardware device that accepts and responds to requests made over a network.

What is a VM ?

A virtual machine (VM) is a virtual environment that works like a computer within a computer. It runs on an isolated partition of its host computer with its own resources of CPU power, memory, an operating system (e.g. Windows, Linux, macOS), and other resources. This allows end-users to run applications on VMs and use them as they normally would on their workstation.

What is a Hypervisor ?

A hypervisor, also known as a virtual machine monitor or VMM, is software that creates and runs virtual machines (VMs)*. A hypervisor allows one host computer to support multiple guest VMs by virtually sharing its resources, such as memory and processing.*

Difference between Physical and Virtual Machine ?

VMs have an additional level of isolation and can run an independent OS on top of the hypervisor*. A physical machine can be split up into many VMs, where each has its own purpose, making it different than the bare-metal example above, where the physical server only runs one service*

Advantages of Virtual Machines ?

Reduced upfront hardware and continuing operating costs.
Minimized or eliminated downtime.
Increased IT productivity and responsiveness.
Greater business continuity and disaster recovery response.
Simplified data center management.
Faster provisioning of applications and resources.

Things going well so far, once again I am thankful to Abhishek Veeramalla sir ..!!