Hypervisor A of software that sits between the hardware and one or more operating  – systems. Its primary job is to provide isolated execution environments called partitions. The hypervisor controls and arbitrates access to the underlying hardware. IC Integration component. Component that allows partitions to communication with  – other partitions and the hypervisor.  I/O stack Input/output stack. – MSR Memory Service Routine.  –  Root Partition Manages machine-level functions such as device drivers, power – management, and device hot addition/removal. The root (or parent) partition is the only partition that has direct access to physical memory and devices. VID Virtualization Infrastructure Driver. Provides partition management services, virtual  – processor management services, and memory management services for partitions. VMBus Channel-based communication mechanism used for inter-partition communication  – and device enumeration on systems with multiple active virtualized partitions. The VMBus is installed with Hyper-V Integration Services. VMMS Virtual Machine Management Service. Responsible for managing the state of all  – virtual machines in child partitions. VMWP Virtual Machine Worker Process. A user mode component of the virtualization stack.  – The worker process provides virtual machine management services from the Windows Server 2008 instance in the parent partition to the guest operating systems in the child partitions. The Virtual Machine Management Service spawns a separate worker process for each running virtual machine. VSC Virtualization Service Client. A synthetic device instance that resides in a child  – partition. VSCs utilize hardware resources that are provided by Virtualization Service Providers (VSPs) in the parent partition. They communicate with the corresponding VSPs in the parent partition over the VMBus to satisfy a child partitions device I/O requests. VSP Virtualization Service Provider. Resides in the root partition and provide synthetic  – device support to child partitions over the Virtual Machine Bus (VMBus). WinHv Windows Hypervisor Interface Library. WinHv is essentially a bridge between a  – partitioned operating system’s drivers and the hypervisor which allows drivers to call the hypervisor using standard Windows calling conventions WMI The Virtual Machine Management Service exposes a set of Windows Management  – Instrumentation (WMI)-based APIs for managing and controlling virtual machines. Most of these terms are defined in the . Note For more information Windows Server 2008 Hyper-V, see .
 Hypervisor – A of software that sits between the hardware and one or more operating systems. Its primary job is to provide isolated execution environments called partitions. The hypervisor controls and arbitrates access to the underlying hardware.  IC – Integration component. Component that allows partitions to communication with other partitions and the hypervisor.  I/O stack – Input/output stack.  MSR – Memory Service Routine.  Root Partition – Manages machine-level functions such as device drivers, power management, and device hot addition/removal. The root (or parent) partition is the only partition that has direct access to physical memory and devices.  VID – Virtualization Infrastructure Driver. Provides partition management services, virtual processor management services, and memory management services for partitions.  VMBus – Channel-based communication mechanism used for inter-partition communication and device enumeration on systems with multiple active virtualized partitions. The VMBus is installed with Hyper-V Integration Services.  VMMS – Virtual Machine Management Service. Responsible for managing the state of all virtual machines in child partitions.  VMWP – Virtual Machine Worker Process. A user mode component of the virtualization stack. The worker process provides virtual machine management services from the Windows Server 2008 instance in the parent partition to the guest operating systems in the child partitions. The Virtual Machine Management Service spawns a separate worker process for each running virtual machine.  VSC – Virtualization Service Client. A synthetic device instance that resides in a child partition. VSCs utilize hardware resources that are provided by Virtualization Service Providers (VSPs) in the parent partition. They communicate with the corresponding VSPs in the parent partition over the VMBus to satisfy a child partitions device I/O requests.  VSP – Virtualization Service Provider. Resides in the root partition and provide synthetic device support to child partitions over the Virtual Machine Bus (VMBus).  WinHv – Windows Hypervisor Interface Library. WinHv is essentially a bridge between a partitioned operating system’s drivers and the hypervisor which allows drivers to call the hypervisor using standard Windows calling conventions  WMI – The Virtual Machine Management Service exposes a set of Windows Management Instrumentation (WMI)-based APIs for managing and controlling virtual machines. Most of these terms are defined in the . Note For more information Windows Server 2008 Hyper-V, see .