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Hyper-V Hotfix for Intel Sandy Bridge and Westmere

Thomas Maurer
1–2 minutes
3 comments on Hyper-V Hotfix for Intel Sandy Bridge and Westmere

If you are using Microsoft Hyper-V with new Intel Sandy Bridge or Intel Westmere processors and our server has over 48GB of physical RAM you may get a performance decrease. Microsoft released a hotfix (KB2517329) for this problem.

This could also be a problem with a lot of Hyper-V installations on Cisco UCS, because the most of them will use more than 48GB of memory.

The performance decrease could show its self in the the following issues:

  • The CPU usage is high and the server responds slowly when you copy large files on the computer. For example, you copy a 10-GB file
  • The disk I/O performance of the virtual machines (VMs) is slow
  • Windows takes a long time to start

The hotfix is not include in Service Pack 1 for Hpyer-V R2 or Windows Server 2008 R2.

For more information about this you can check KB2517329

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Thomas Maurer
Thomas is the EMEA Global Black Belt (GBB) for Sovereign Cloud at Microsoft, helping organizations across the region harness Microsoft’s sovereign, hybrid, multicloud, and edge solutions. He works directly with C-level leaders and technical teams to remove roadblocks, accelerate digital transformation, and shape long-term cloud strategies that meet business and regulatory needs. With over 15 years of experience in cloud and datacenter, including his previous role as Principal Program Manager and Chief Evangelist for Azure Hybrid, he combines deep technical expertise with a passion for customer success. He specializes in creating scalable architectures, solution accelerators, and thought leadership that drive adoption and innovation on Azure. Thomas is a passionate community advocate and frequently speaks at industry events such as Microsoft Ignite and Microsoft TechDays. He shares his expertise through his Cloud and Datacenter Blog at www.thomasmaurer.ch and on LinkedIn and X.com www.twitter.com/thomasmaurer.

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3 responses

  1. Eduardo Avatar
    Eduardo

    Thanks a lot!

    You saved my day ;)

    Reply
  2. Eduardo Avatar
    Eduardo

    By the way, I was trying to install Windows 2008 R2 SP1 Standar Edition with Hyper-V, but after the installation of Hyper-V windows didn’t star anymoe, unless the virtualization option in the bios were disabled.

    So, after disabling de virtualization in the BIOS, I installed the patch, and then I re-enable the option in the BIOS, after that everything was back to normal and i could run the VMs again.

    My PC is a Dell Alienware M17xr3.

    Hope this help someone else.

    Greetings!

    Reply

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