esSJae's Virtualization Blog

Virtualization and other IT topics

Archive for February 6th, 2013

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

Expanded explanation of why it happens:

SLAT resolution:


Posted in Hyper-V, Virtualization, W2K8R2, Windows 8 | Tagged: , , , , , , , , , | 3 Comments »