Dell PowerEdge R830 Owners Manual - Page 54

Serial Communication, Current State of Embedded Video

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Option Description Integrated Enables or disables the integrated network card. Network Card 1 Embedded NIC1 and NIC2 NOTE: The Embedded NIC1 and NIC2 options are only available on systems that do not have Integrated Network Card 1. Enables or disables the Embedded NIC1 and NIC2 options. If set to Disabled, the NIC may still be available for shared network access by the embedded management controller. The embedded NIC1 and NIC2 options are only available on systems that do not have Network Daughter Cards (NDCs). The Embedded NIC1 and NIC2 option is mutually exclusive with the Integrated Network Card 1 option. Configure the Embedded NIC1 and NIC2 option by using the NIC management utilities of the system. I/OAT DMA Engine Enables or disables the I/OAT option. Enable only if the hardware and software support the feature. I/O Snoop Holdoff Response Selects the number of cycles PCI I/O can withhold snoop requests from the CPU, to allow time to complete its own write to LLC. This setting can help improve performance on workloads where throughput and latency are critical. Embedded Video Enables or disables the Embedded Video Controller option. This option is set to Enabled by default. Controller Current State of Embedded Video Controller Displays the current state of the embedded video controller. The Current State of Embedded Video Controller option is a read-only field. If the Embedded Video Controller is the only display capability in the system (that is, no add-in graphics card is installed), then the Embedded Video Controller is automatically used as the primary display even if the Embedded Video Controller setting is set to Disabled. SR-IOV Global Enable Enables or disables the BIOS configuration of Single Root I/O Virtualization (SR-IOV) devices. This option is set to Disabled by default. OS Watchdog Timer If your system stops responding, this watchdog timer aids in the recovery of your operating system. When this option is set to Enabled, the operating system initializes the timer. When this option is set to Disabled (the default), the timer does not have any effect on the system. Memory Mapped Enables or disables the support for PCIe devices that need large amounts of memory. This option is set to I/O above 4 GB Enabled by default. Slot Disablement Enables or disables the available PCIe slots on your system. The slot disablement feature controls the configuration of PCIe cards installed in the specified slot. Slots must be disabled only when the installed peripheral card prevents booting into the operating system or causes delays in system startup. If the slot is disabled, both the Option ROM and UEFI drivers are disabled. Related references Integrated Devices on page 53 Related tasks Viewing Integrated Devices on page 53 Serial Communication You can use the Serial Communication screen to view the properties of the serial communication port. Related references System BIOS on page 35 Related tasks Serial Communication details on page 55 Viewing Serial Communication on page 55 54 Pre-operating system management applications

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Option
Description
Integrated
Network Card 1
Enables or disables the integrated network card.
Embedded NIC1
and NIC2
NOTE:
The Embedded NIC1 and NIC2 options are only available on systems that do not have
Integrated Network Card 1
.
Enables or disables the Embedded NIC1 and NIC2 options. If set to
Disabled
, the NIC may still be
available for shared network access by the embedded management controller. The embedded NIC1 and
NIC2 options are only available on systems that do not have Network Daughter Cards (NDCs). The
Embedded NIC1 and NIC2 option is mutually exclusive with the Integrated Network Card 1 option.
Configure the Embedded NIC1 and NIC2 option by using the NIC management utilities of the system.
I/OAT DMA
Engine
Enables or disables the I/OAT option. Enable only if the hardware and software support the feature.
I/O Snoop
Holdoff
Response
Selects the number of cycles PCI I/O can withhold snoop requests from the CPU, to allow time to
complete its own write to LLC. This setting can help improve performance on workloads where
throughput and latency are critical.
Embedded Video
Controller
Enables or disables the
Embedded Video Controller
option. This option is set to
Enabled
by default.
Current State of
Embedded Video
Controller
Displays the current state of the embedded video controller. The
Current State of Embedded Video
Controller
option is a read-only field. If the Embedded Video Controller is the only display capability in the
system (that is, no add-in graphics card is installed), then the Embedded Video Controller is automatically
used as the primary display even if the
Embedded Video Controller
setting is set to
Disabled
.
SR-IOV Global
Enable
Enables or disables the BIOS configuration of Single Root I/O Virtualization (SR-IOV) devices. This option
is set to
Disabled
by default.
OS Watchdog
Timer
If your system stops responding, this watchdog timer aids in the recovery of your operating system. When
this option is set to
Enabled
, the operating system initializes the timer. When this option is set to
Disabled
(the default), the timer does not have any effect on the system.
Memory Mapped
I/O above 4 GB
Enables or disables the support for PCIe devices that need large amounts of memory. This option is set to
Enabled
by default.
Slot Disablement
Enables or disables the available PCIe slots on your system. The slot disablement feature controls the
configuration of PCIe cards installed in the specified slot. Slots must be disabled only when the installed
peripheral card prevents booting into the operating system or causes delays in system startup. If the slot
is disabled, both the Option ROM and UEFI drivers are disabled.
Related references
Integrated Devices
on page 53
Related tasks
Viewing Integrated Devices
on page 53
Serial Communication
You can use the
Serial Communication
screen to view the properties of the serial communication port.
Related references
System BIOS
on page 35
Related tasks
Serial Communication details
on page 55
Viewing Serial Communication
on page 55
54
Pre-operating system management applications