![]() VMM software enables the creation, management, and governance of virtual machines and manages the operation of a virtualized environment on top of a physical host machine ( Technopedia, 2023). However, in the virtualized computer, the hardware and operating systems used by applications are separated by the Virtual Machine Monitor (VMM) software. ![]() In the illustration above, the non-virtualized computer's single operating system with its drivers is in direct connection or relationship with the physical machine's hardware, and individual apps then utilize the single operating system. ![]() This is the basis of cloud computing, enabling the creation of virtual resources such as virtual servers, desktops, operating systems, files, storage, and networks. Virtualization is a process where software is used to create an abstraction layer (the decoupling of the operating system from the physical hardware platform and applications that run on it). You can also run a single purpose VM to support a specific process.What is virtualization and why is it important? VMs provide additional disaster recovery options by enabling failover and redundancy that could previously only be achieved through additional hardware.Ī VM provides an environment that is isolated from the rest of a system, so whatever is running inside a VM won’t interfere with anything else running on the host hardware.īecause VMs are isolated, they are a good option for testing new applications or setting up a production environment. This keeps you from needing to purchase additional physical resources, like hard drives or hard disks, as well as reducing the need for power, space, and cooling in the datacenter. By virtualizing your servers, you can place many virtual servers onto each physical server to improve hardware utilization. Most operating system and application deployments only use a small amount of the physical resources available when deployed to bare metal. Server consolidation is a top reason to use VMs. Each operating system runs in the same way an operating system or application normally would on the host hardware, so the end user experience emulated within the VM is nearly identical to a real-time operating system experience running on a physical machine. ![]() VMs allow multiple different operating systems to run simultaneously on a single computer-like a Linux® distro on a MacOS laptop. The hypervisor treats compute resources-like CPU, memory, and storage-as a pool of resources that can easily be relocated between existing guests or to new virtual machines. The physical machines, equipped with a hypervisor such as Kernel-based Virtual Machine (KVM), is called the host machine, host computer, host operating system, or simply host. The many VMs that use its resources are guest machines, guest computers, guest operating systems, or simply guests. Software called a hypervisor separates the machine’s resources from the hardware and provisions them appropriately so they can be used by the VM. A virtual machine (VM) is a virtual environment that functions as a virtual computer system with its own CPU, memory, network interface, and storage, created on a physical hardware system (located off- or on-premises).
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