Before we start with our Vagrant tutorial we will learn few concepts of Virtualization and Oracle Virtual Box.
What is Virtualization?
Virtualization is a technology that provides a way to separate physical hardware and software by emulating hardware using software. It enables a computing environment to run multiple different and independent systems at the same time.
For example, instead of having one physical server running one operating system, with server virtualization, you would have one physical server running multiple operating system simultaneously:
With virtualization technology, you can create pools of logical resources consisting of memory, CPUs, storage, disks and so on, and offer those resources to virtual machines.
What is Hypervisor?
A hypervisor is a piece of software that enables a user to create and runs one or more virtual machines simultaneously. A hypervisor is also known as the virtual machine monitor (VMM).
One of the key functions that hypervisor provides is isolation, meaning that a guest cannot affect the operation of the host or any other guest, even if it crashes.
Hypervisors can be of two types: Type 1 and Type 2.
Type 1 – also known as native or bare metal hypervisor, this type of hypervisor runs directly on top of the physical hardware. Each virtual operating system runs atop the hypervisor. Examples of bare metal hypervisors are the Oracle VM server, Vmware ESX/ESXi and Microsoft Hyper-V.
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