Updating windows xp to sp3
Virtual devices can also take advantage of a Windows Server Virtualization feature, named Enlightened I/O, for storage, networking and graphics subsystems, among others.
Enlightened I/O is a specialized virtualization-aware implementation of high level communication protocols, like SCSI, that allows bypassing any device emulation layer and takes advantage of VMBus directly.
however, integration components (which include the VSC drivers) are available for Windows Server 2003 SP2, Windows Vista SP1 and Linux to achieve better performance.
Xen-enabled Linux guest distributions can also be paravirtualized in Hyper-V.
Starting with Windows 8, Hyper-V superseded Windows Virtual PC as the hardware virtualization component of the client editions of Windows NT.
A server computer running Hyper-V can be configured to expose individual virtual machines to one or more networks.
This makes the communication more efficient, but requires the guest OS to support Enlightened I/O.
Hyper-V Server 2008 was released on October 1, 2008.A partition is a logical unit of isolation, supported by the hypervisor, in which each guest operating system executes.A hypervisor instance has to have at least one parent partition, running a supported version of Windows Server (2008 and later).The hypervisor handles the interrupts to the processor, and redirects them to the respective partition using a logical Synthetic Interrupt Controller (Syn IC).Hyper-V can hardware accelerate the address translation of Guest Virtual Address-spaces by using second level address translation provided by the CPU, referred to as EPT on Intel and RVI (formerly NPT) on AMD.