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In virtualization, guest operating systems can use hardware that is not specifically made for virtualization. Higher performance hardware such as graphics cards use DMA to access memory directly; in a virtual environment all memory addresses are re-mapped by the virtual machine software, which causes DMA devices to fail.
The vast majority of Intel server chips of the Xeon E3, Xeon E5, and Xeon E7 product lines support VT-d. The first—and least powerful—Xeon to support VT-d was the E5502 launched Q1'09 with two cores at 1.86 GHz on a 45 nm process. [2]
Part of Windows: Hyper-V is an optional component of Windows Server 2008 and later. It is also available in x64 SKUs of Pro and Enterprise editions of Windows 8, Windows 8.1, Windows 10 and Windows 11. Hyper-V Server: It is a freeware edition of Windows Server with limited functionality and Hyper-V component. [8]
Virtual machines frequently use virtual disks for their storage; in a very simple example, a 10-gigabyte hard disk drive is simulated with a 10-gigabyte flat file. Any requests by the VM for a location on its physical disk are transparently translated into an operation on the corresponding file.
A single physical PCI Express bus can be shared in a virtual environment using the SR-IOV specification. [1] [2] The SR-IOV offers different virtual functions to different virtual components (e.g. network adapter) on a physical server machine.
Hardware virtualization is the virtualization of computers as complete hardware platforms, certain logical abstractions of their componentry, or only the functionality required to run various operating systems. Virtualization emulates the hardware environment of its host architecture, allowing multiple OSes to run unmodified and in isolation.
SWV is available on a trial basis, but must be purchased to enable the full features. SWV is free for private use. In 2008, Symantec acquired AppStream to incorporate the streaming of virtual applications. [1] According to a quote from DABCC.com, this will "deliver virtualized, on-demand application delivery and management". [2]
Microsoft Application Virtualization (also known as App-V; [1] formerly Softricity SoftGrid) [2] is an application virtualization and application streaming solution from Microsoft. It was originally developed by Softricity, a company based in Boston , Massachusetts , acquired by Microsoft on July 17, 2006. [ 3 ]