A virtual machine (VM) is a digital version of a physical computer. Today we will talk about what exactly are the Virtual Machines and how do they work. Let’s find out by reading the article below.
What are Virtual Machines?
A virtual machine (VM) is a virtual environment created on a physical hardware system (either off-site or on-site) as a virtual computer system with its own CPU, memory, network interface, and storage. Software called a hypervisor separates the machine's resources from the hardware and configures them appropriately so that VMs can use them.
A VM allows several different operating systems to run simultaneously on a single computer just like a Linux distribution on a MacOS laptop. Each operating system runs in the same way that an operating system or application would normally run on the host hardware, so the end-user experience simulated in a VM is nearly identical to that of a live operating system running on a physical machine.
How do they work?
Virtualization technology allows you to share one system with many virtual environments. The hypervisor manages the hardware and separates physical resources from the virtual environment. Resources are partitioned from physical environments to VMs as needed.
When a VM is running and a user or program issues an instruction to obtain additional resources from the physical environment, the hypervisor dispatches the request to the physical system's resources so that the virtual machine's operating system and applications can access a shared pool of physical resources.
I hope this article will help you to learn what exactly are the Virtual Machines and how do they work. Although virtual machines run like separate computers with separate operating systems and applications, they have the advantage of remaining completely independent of each other and the physical host.
