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In October 2012, a group of telecom operators published a white paper [4] at a conference in Darmstadt, Germany, on software-defined networking (SDN) and OpenFlow.The Call for Action concluding the White Paper led to the creation of the Network Functions Virtualization (NFV) Industry Specification Group (ISG) [5] within the European Telecommunications Standards Institute (ETSI).
For example, a typical server runs at 425 W [6] and VMware estimates a hardware reduction ratio of up to 15:1. [7] A virtual machine (VM) can be more easily controlled and inspected from a remote site than a physical machine, and the configuration of a VM is more flexible.
Integrity Virtual Machines: Hewlett-Packard: IA-64: IA-64 HP-UX: HP-UX, Windows, Linux (OpenVMS announced) Proprietary: JPC (Virtual Machine) University of Oxford: Any running the Java Virtual Machine: x86 Java Virtual Machine DOS, Linux, Windows up to 3.0 GPL version 2: KVM: Qumranet, now Red Hat x86, x86-64, IA-64, with x86 virtualization ...
This type of VM has become popular with the Java programming language, which is implemented using the Java virtual machine. Other examples include the Parrot virtual machine and the .NET Framework, which runs on a VM called the Common Language Runtime. All of them can serve as an abstraction layer for any computer language. [citation needed]
A hypervisor, also known as a virtual machine monitor (VMM) or virtualizer, is a type of computer software, firmware or hardware that creates and runs virtual machines. A computer on which a hypervisor runs one or more virtual machines is called a host machine , and each virtual machine is called a guest machine .
Virtualization software allows a single host computer to create and run one or more virtual environments.. Virtualization software is most often used to emulate a complete computer system in order to allow a guest operating system to be run, for example allowing Linux to run as a guest on top of a PC that is natively running a Microsoft Windows operating system (or the inverse, running Windows ...
Squawk virtual machine – a Java ME VM for embedded systems and small devices. Cross-Platform. GPL. SuperWaba – Java-like virtual machine for portable devices. GPL. Discontinued, succeeded by TotalCross. TakaTuka – for wireless sensor network devices. GPL. TinyVM. VMKit of LLVM. Wonka VM – developed to run on Acunia's ARM-based hardware ...
A concrete example of the virtual appliances approach to delivering SaaS is the Amazon Elastic Compute Cloud (EC2)—a grid of Xen hypervisor nodes coupled with the availability of pre-packaged virtual appliances in the Amazon Machine Image format. Amazon EC2 reduces the cost-barrier to the point where it becomes feasible to have each customer ...