![]() Consult Plan for Deploying Devices using Discrete Device Assignment to learn how to precisely calculate MMIO requirements.ĭismount the Device from the Host Partition Optional - Install the Partitioning Driverĭiscrete Device Assignment provide hardware venders the ability to provide a security mitigation driver with their devices. If after starting the VM, the device is reporting an error relating to not enough resources, you'll likely need to modify these values. The MMIO space values above are reasonable values to set for experimenting with a single GPU. Set-VM -HighMemoryMappedIoSpace 33280Mb -VMName VMName Configure greater than 32 bit MMIO space.Set-VM -LowMemoryMappedIoSpace 3Gb -VMName VMName Set-VM -GuestControlledCacheTypes $true -VMName VMName Additional details can be found on Plan for Deploying Devices using Discrete Device Assignment and on this blog post. For details on whether or not you need the following configurations for your hardware, please reach out to the hardware vendor. Some hardware performs better if the VM in configured in a certain way. Some Additional VM preparation is required for Graphics Devices Set-VM -Name VMName -AutomaticStopAction TurnOff Configure the “Automatic Stop Action” of a VM to TurnOff by executing.Configure the VM for DDAĭiscrete Device Assignment imposes some restrictions to the VMs and the following step needs to be taken. Dismount the Device from the Host PartitionĪll command can be executed on the Host on a Windows PowerShell console as an Administrator.Configure the VM for Discrete Device Assignment.There are three steps to using a device with Discrete Device Assignment: Please visit the Plan for Deploying Devices using Discrete Device Assignment for more details on which devices work, what are the possible security implications, etc. ![]() This will allow high performance access to devices like NVMe storage or Graphics Cards from within a VM while being able to leverage the devices native drivers. Starting with Windows Server 2016, you can use Discrete Device Assignment, or DDA, to pass an entire PCIe Device into a VM. Applies to: Windows Server 2022, Microsoft Hyper-V Server 2016, Windows Server 2016, Windows Server 2019, Microsoft Hyper-V Server 2019 ![]()
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