Windows Server 2012 Hyper – V

There are two types of virtualization software for machinevirtualization,

- Type 1 Also known as a hypervisor, a Type 1 virtualizationsolution runs directly on the hardware.

- Type 2 A Type 2 virtualization solution is installed on anoperating system and relies on that operating system tofunction

Technical Requirement- 64-Bit Processor Microsoft is releasing only 64-bit versions

of Windows Server, and Hyper-V requires an x64 processor.- 32-Bit and 64-Bit Guest Operating Systems. You can run both

x86 and x64 guest operating systems in Hyper-V virtualmachines.

The Architecture of Hyper-V- Hyper-V is a Type 2 virtualization product. This is because

you must install Windows Server 2012 (and the requireddrivers) to enable Hyper-V

- The Microsoft hypervisor must have at least one parent, or root, partition, running Windows Server 2008 64-bit Edition.The virtualization stack runs in the parent partition and has direct access to the hardware devices. The root partition then creates the child partitions which host the guest operating systems. A root partition creates child partitions using the hypercall application programming interface (API)

- VMMS – Virtual Machine Management Service – Responsible formanaging the state of all virtual machines in childpartitions.

- VM Worker Processes: There is one worker process for everyvirtual machine that is running on the host. This workerprocess is used to manage the virtual machine. When youperform Live Migration on a virtual machine, this is managedby the worker process of that virtual machine. If you enableDynamic Memory for a virtual machine, the worker process isinvolved in allocating memory to the virtual machine

- APIC – Advanced Programmable Interrupt Controller – A devicewhich allows priority levels to be assigned to its interruptoutputs.

- Child Partition – Partition that hosts a guest operatingsystem - All access to physical memory and devices by achild partition is provided via the Virtual Machine Bus(VMBus) or the hypervisor.

- Hypercall – Interface for communication with the hypervisor- The hypercall interface accommodates access to theoptimizations provided by the hypervisor.

- Hypervisor – A layer of software that sits between thehardware and one or more operating systems. Its primary jobis to provide isolated execution environments calledpartitions. The hypervisor controls and arbitrates access tothe underlying hardware.

- IC – Integration component – Component that allows childpartitions to communication with other partitions and thehypervisor.

- I/O stack – Input/output stack

- MSR – Memory Service Routine

- Root Partition – Manages machine-level functions such asdevice drivers, power management, and device hotaddition/removal. The root (or parent) partition is the onlypartition that has direct access to physical memory anddevices.

- VID – Virtualization Infrastructure Driver – Providespartition management services, virtual processor managementservices, and memory management services for partitions.

- VMBus – Channel-based communication mechanism used forinter-partition communication and device enumeration onsystems with multiple active virtualized partitions. TheVMBus is installed with Hyper-V Integration Services.

- VMMS – Virtual Machine Management Service – Responsible formanaging the state of all virtual machines in childpartitions.

- VMWP – Virtual Machine Worker Process – A user modecomponent of the virtualization stack. The worker processprovides virtual machine management services from theWindows Server 2008 instance in the parent partition to theguest operating systems in the child partitions. The VirtualMachine Management Service spawns a separate worker processfor each running virtual machine.

- VSC – Virtualization Service Client – A synthetic deviceinstance that resides in a child partition. VSCs utilizehardware resources that are provided by VirtualizationService Providers (VSPs) in the parent partition. Theycommunicate with the corresponding VSPs in the parentpartition over the VMBus to satisfy a child partitionsdevice I/O requests.

- VSP – Virtualization Service Provider – Resides in the rootpartition and provide synthetic device support to childpartitions over the Virtual Machine Bus (VMBus).

- WinHv – Windows Hypervisor Interface Library - WinHv isessentially a bridge between a partitioned operatingsystem’s drivers and the hypervisor which allows drivers tocall the hypervisor using standard Windows callingconventions

- WMI – The Virtual Machine Management Service exposes a setof Windows Management Instrumentation (WMI)-based APIs formanaging and controlling virtual machines.

Maximum Scalability- A single Windows Server 2012 Hyper-V host can support up to

320 Logical processors.+ Sixteen 10-core processors with Hyper-Threading enabled+ Thirty – two 10 – core processors with no Hyper-Threading

- Management OS for Hyper-V then don’t a DC Server, SQLServer, don’t turn on RDP Service.

- A single Host up to 4TTB RAM, 1024 VMs, up to 2048 virtualprocessors in VMs

- Virtual processors per VM 64. Max RAM per VM 1TB.

Hyper – V License

- Licensing Basis The Standard and Enterprise editions werelicensed per server. The Datacenter edition was licensed perprocessor, and you had to purchase at least two Datacenterlicenses, even if the host had only one processor.

- A Virtual Operating System Environment (VOSE) is a licensingterm for a guest OS, the OS that you install in a virtualmachine. You license physical machines for Windows Server.You license virtual machines based on the virtualizationrights of the host

Deployment Hyper – V