esSJae's Virtualization Blog

Virtualization and other IT topics

Why does Windows 8 Hyper-V require SLAT?

Posted by essjae on February 6, 2013


Since Windows 8 is designed as a desktop/workstation or client OS, the requirement for SLAT makes a lot of sense for most users.

The lack of SLAT (Intel EPT and AMD RVI) was a big issue when using Hyper-V and a Windows 2008 (r1 and r2) system equipped with a high-end video card as a workstation (as opposed to a server).  When 2008r2 became able to use SLAT, the video performance issues were just resolved.

VPC Guy Ben A has an excellent selection of blog posts on SLAT and Hyper-V.

Issue: Video performance may decrease when a Windows Server 2008 or Windows Server 2008 R2 based computer has the Hyper-V role enabled and an accelerated display adapter installed

http://support.microsoft.com/kb/961661?wa=wsignin1.0

Expanded explanation of why it happens:

http://blogs.msdn.com/b/virtual_pc_guy/archive/2009/11/16/understanding-high-end-video-performance-issues-with-hyper-v.aspx

SLAT resolution:

http://blogs.msdn.com/b/virtual_pc_guy/archive/2011/01/17/using-hyper-v-for-a-high-end-desktop-computer.aspx?Redirected=true

 

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3 Responses to “Why does Windows 8 Hyper-V require SLAT?”

  1. […] Why does Windows 8 Hyper-V require SLAT? by Steve Jain […]

  2. […] Why does Windows 8 Hyper-V require SLAT? by Steve Jain […]

  3. […] Why does Windows 8 Hyper-V require SLAT? by Steve Jain […]

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