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The problems created by the near invisibility of between-virtual machine (VM-to-VM) traffic on a virtual network are exactly like those found in physical networks, complicated by the fact that the packets may be moving entirely inside the hardware of a single physical host: Because the virtual network traffic may never leave the physical host ...
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.
In computing, a virtual machine (VM) is the virtualization or emulation of a computer system.Virtual machines are based on computer architectures and provide the functionality of a physical computer.
A virtual machine implements functionality of a (physical) computer with an operating system. The software or firmware that creates a virtual machine on the host hardware is called a hypervisor or virtual machine monitor. [2] Software executed on these virtual machines is separated from the underlying hardware resources.
Virtual Machine/Extended Architecture System Facility VM/XA SF is an upgraded VM/XA MA with improved functionality and performance. [9] Virtual Machine/Extended Architecture System Product VM/XA SP is an upgraded VM/XA MA with improved functionality and performance, offered as a replacement for VM/SP HPO on machines supporting S/370-XA.
The creation and management of virtual machines has also been called "platform virtualization", or "server virtualization", more recently. [2] [3] Platform virtualization is performed on a given hardware platform by host software (a control program), which creates a simulated computer environment, a virtual machine (VM), for its guest software ...
OS-level virtualization is an operating system (OS) virtualization paradigm in which the kernel allows the existence of multiple isolated user space instances, including containers (LXC, Solaris Containers, AIX WPARs, HP-UX SRP Containers, Docker, Podman), zones (Solaris Containers), virtual private servers (), partitions, virtual environments (VEs), virtual kernels (DragonFly BSD), and jails ...
In order to deploy these servers within a virtual environment, a virtual network needed to be formed. As a result, companies such as VMware created a resource called a virtual switch. The purpose of the virtual switch was to provide network connectivity within the virtual environment so that virtual machines and applications could communicate ...