Supermicro X11DAi-N User Manual page 94

Super X11DAi-N User's Manual
PassThrough DMA
Select Enable for the Non-Isoch VT-d engine to pass through DMA (Direct Memory Access)
to enhance system performance. The options are Enable and Disable.
ATS
Select Enable to enable ATS (Address Translation Services) support for the Non-Isoch VT-d
engine to enhance system performance. The options are Enable and Disable.
Posted Interrupt
Select Enable to support VT_D Posted Interrupt which will allow external interrupts to be
sent directly from a direct-assigned device to a client machine in non-root mode to improve
virtualization efficiency by simplifying interrupt migration and lessening the need of physical
interrupts. The options are Enable and Disable.
Coherency Support (Non-Isoch)
Select Enable for the Non-Isoch VT-d engine to pass through DMA (Direct Memory Access)
to enhance system performance. The options are Enable and Disable.
Intel® VMD Technology

This section describes the configuration settings for the Intel Volume Management Device
(VMD) Technology.
Note: After you've enabled VMD on a PCIe slot of your choice, this PCIe slot will be
dedicated for VMD use only, and it will no longer support any PCIe device. To re-activate
this slot for PCIe use, please disable VMD.
Intel® VMD for Onboard NVMe

VMD Configuration for Onboard NVMe
Onboard NVMe Mode
Select Legacy Mode for the onboard NVMe devices to support Legacy Mode. The options
are Legacy Mode and the VMD Mode.
Note: When this option is set to VMD Mode, the following two items will display.
P1_NVMe0 VMD/P1_NVMe1 VMD
Select Enable to enable Intel Volume Management Device Technology support for the
root port specified by the user. The options are Enable and Disable.
Note: After you've enabled VMD support on a NMVe port, this port will be dedicated
for VMD use only. To reactivate this port for NMVe use, please disable VMD support
on the port.
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