Supermicro SuperServer 8049U-E1CR4T, User Manual

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Chapter 6: BIOS
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Relaxed Ordering
Select Enable to enable Relaxed Ordering support which will allow certain transactions to
violate the strict-ordering rules of PCI and to be completed prior to other transactions that
have already been enqueued. The options are
Disable and Enable.

Intel® VT for Directed I/O (VT-d)
Intel® VT for Directed I/O (VT-d)
Select Enable to use Intel Virtualization Technology support for Direct I/O VT-d by reporting
the I/O device assignments to the VMM (Virtual Machine Monitor) through the DMAR
ACPI tables. This feature offers fully-protected I/O resource sharing across Intel platforms,
providing greater reliability, security and availability in networking and data-sharing. The
options are
Enable and Disable.
Interrupt Remapping
Select Enable for Interrupt Remapping support to enhance system performance. The
options are
Enable and Disable.
PassThrough DMA
Select Enable for the Non-Iscoh 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-Iscoh 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-Iscoh VT-d engine to pass through DMA (Direct Memory Access)
to enhance system performance. The options are
Enable and Disable.

Intel® VMD Technology

Intel® VMD for Onboard NVMe
Intel® VMD for Volume Management
Select Enable to enable Intel Volume Management Device Technology in the stack.
The default setting is Disable .