Virtual Private Hosting has gained much traction with the turn of the century. It became to be considered as an effective solution for a small business whose capabilities extended beyond those supported by a Shared Hosting server but at the same time could not afford a dedicated server to meet their requirements. But to understand the functioning of the VPS server, we must be well versed with the concept of virtualization, the underlying base for a VPS server.
Simply put, virtualization refers to creating a virtual environment from a resource. It is not a new concept and has been around for many decades now. In its broadest form, it is divided into three categories, namely, hardware virtualization, server virtualization, and operating system (OS) virtualization. Virtualization consists of three components. A host machine which is a physical resource which forms the basis for virtualization. Guest machines which are the virtualized environment which runs with their allocated amount of resources based on the host machine. And lastly, a software which is used to create interactions between the host and the guest machines. In a VPS Hosting, virtualization works by creating multiple virtual servers, each independent of each other. Each virtual server works like a dedicated server with their own allocated amount of resources such as storage, bandwidth, CPU and RAM. However, they are pocket-friendly since a single physical server can host multiple virtual servers. This is usually achieved through a program called a hypervisor.
What is a hypervisor?