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Virtualization
In computing, virtualization (abbreviated v12n) is a series of technologies that allows dividing of physical computing resources into a series of virtual machines, operating systems, processes or containers.[1] Virtualization began in the 1960s with IBM CP/CMS.[1] The control program CP provided each user with a simulated stand-alone System/360 computer.
In hardware virtualization, the host machine is the machine that is used by the virtualization and the guest machine is the virtual machine. The words host and guest are used to distinguish the software that runs on the physical machine from the software that runs on the virtual machine. The software or firmware that creates a virtual machine on the host hardware is called a hypervisor or virtual machine monitor.[2] Hardware virtualization is not the same as hardware emulation. Hardware-assisted virtualization facilitates building a virtual machine monitor and allows guest OSes to be run in isolation.
Desktop virtualization is the concept of separating the logical desktop from the physical machine.
Operating-system-level virtualization, also known as containerization, refers to an operating system feature in which the kernel allows the existence of multiple isolated user-space instances.
The usual goal of virtualization is to centralize administrative tasks while improving scalability and overall hardware-resource utilization.
St Albans (/sənt ˈɔːlbənz/) is a cathedral city in Hertfordshire,[1] England and the main urban area in the City and District of St Albans. It lies east of Hemel Hempstead and west of Hatfield, about 20 miles (32 km) north-north-west of central London, 8 miles (13 km) south-west of Welwyn Garden City and 11 miles (18 km) south-south-east of Luton. St Albans was the first major town on the old Roman road of Watling Street for travellers heading north and it became the Roman city of Verulamium. It is within the London commuter belt and the Greater London Built-up Area. With a population of 82,146, it is the fourth-most-populous settlement in Hertfordshire.
