Windows 8 Hyper-V will require SLAT (Second Level Address Translation)

15 במרץ 2012

3 תגובות

For those about to buy some new Hyper-V hardware…

“Hyper-V requires a 64-bit system that has Second Level Address Translation (SLAT),” explains Hyper-V program manager Mathew John in Microsoft’s Windows 8 blog. “SLAT is a feature present in the current generation of 64-bit processors by Intel & AMD. You’ll also need a 64-bit version of Windows 8, and at least 4GB of RAM.”

SLAT is a form of hardware virtualization that is included in newer versions of Intel and AMD processors, such as Intel’s Core i3, i5 and i7 processors and AMD’s Barcelona processors. Hyper-V always required some form of hardware virtualization, but this is more restrictive than the current specs.

if you want to check if your servers support SLAT…try out this cool tool…by Mark Russinovich!

On an Intel processor, a star (*) on the line EPT means that SLAT is supported.


On an AMD processor, a star (*) on the line NP means that SLAT is supported.


If a dash is on the line EPT or NP, then your processor does not support the function SLAT and you cannot use Windows 8 Integrated Virtualization.

Bottom line…if you are buying a new server now…for Hyper-V…I would strongly recommend checking for SLAT…without it, you wont be able to upgrade and you’ll have to buy a new Processor…

cu soon!


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3 תגובות

  1. chue21 באפריל 2012 ב 1:20

    I'm seeing information that the Server version will NOT require SLAT. See comments at the bottom of a Microsoft employee blog here –

  2. Talsa22 באפריל 2012 ב 0:00

    Hi there,

    You are correct, SLAT is only needed for RemoteFx (Like R2)…

    So…Depending on your scenario…you might still need it…

    Best Regards,


  3. Andreas Erson4 ביוני 2012 ב 9:50

    This is a not an issue even if SLAT was required by Windows Server 2012. All Intel Xeon CPUs has supported SLAT/EPT since Intel Xeon 5500-series (Nehalem).