Dell PowerEdge C6420 EMC Installation and Service Manual - Page 50

Table 33. Slot Disablement, Current State of Embedded Video

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Option Description Internal SD Card Enables or disables the internal SD Card port on the PCIe riser. This option is set to On or Off. This option is set Port to On by default. iDRAC Direct USB The iDRAC Direct USB port is managed by iDRAC exclusively with no host visibility. This option is set to ON or Port OFF. When set to OFF, iDRAC does not detect any USB devices installed in this managed port. This option is set to On by default. Embedded NIC1 Enables or disables the Embedded NIC1 port. The option is set to Enabled by default. I/OAT DMA Engine Enables or disables the I/O Acceleration Technology (I/OAT) option. I/OAT is a set of DMA features designed to accelerate network traffic and lower CPU utilization. Enable only if the hardware and software support the feature.This option is set to Disabled by default. Embedded Video Controller Enables or disables the use of Embedded Video Controller as the primary display. When set to Enabled, the Embedded Video Controller is used as the primary display even if add-in graphic cards are installed. When set to Disabled, an add-in graphics card is used as the primary display. BIOS will output displays to both the primary add-in video and the embedded video during POST and pre-boot environment. The embedded video is disabled before the operating system boots. This option is set to Enabled by default. NOTE: When there are multiple add-in graphic cards installed in the system, the first card discovered during PCI enumeration is selected as the primary video. You might have to re-arrange the cards in the slots in order to control which card is the primary video. 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 Enabled. SR-IOV Global Enable Enables or disables the BIOS configuration of Single Root I/O Virtualization (SR-IOV) devices. This option is set to Enabled 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. Empty Slot Unhide Enables or disables the root ports of all the empty slots that are accessible to the BIOS and OS. This option is set to Disabled by default. Memory Mapped Enables or disables the support for the PCIe devices that need large amounts of memory. Enable this option only I/O above 4 GB for 64-bit operating systems. This option is set to Enabled by default. Memory Mapped I/O Base When set to 12 TB, the system maps MMIO base to 12 TB. MMIO base default is 56 TB. The default value must not be changed, unless addressing a known issue. Enable this feature for an OS that requires 44 bit PCIe addressing. Slot Disablement Enables or disables the available PCIe slots on your system. The slot disablement feature controls the configuration of the 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. Only slots that are present on the system are available for control. Table 33. Slot Disablement Option Slot 1 Description Enables or disables or only the boot driver is disabled for the PCIe slot 1. This option is set to Enabled by default. Slot 3 Enables or disables or only the boot driver is disabled for the PCIe slot 3. This option is set to Enabled by default. Slot 4 Enables or disables or only the boot driver is disabled for the PCIe slot 4. This option is set to Enabled by default. 50 Pre-operating system management applications

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Option
Description
Internal SD Card
Port
Enables or disables the internal SD Card port on the PCIe riser. This option is set to
On
or
Off
. This option is set
to
On
by default.
iDRAC Direct USB
Port
The iDRAC Direct USB port is managed by iDRAC exclusively with no host visibility. This option is set to
ON
or
OFF
. When set to
OFF
, iDRAC does not detect any USB devices installed in this managed port. This option is set
to
On
by default.
Embedded NIC1
Enables or disables the Embedded NIC1 port. The option is set to
Enabled
by default.
I/OAT DMA
Engine
Enables or disables the I/O Acceleration Technology (I/OAT) option. I/OAT is a set of DMA features designed to
accelerate network traffic and lower CPU utilization. Enable only if the hardware and software support the
feature.This option is set to
Disabled
by default.
Embedded Video
Controller
Enables or disables the use of Embedded Video Controller as the primary display. When set to
Enabled
, the
Embedded Video Controller is used as the primary display even if add-in graphic cards are installed. When set to
Disabled
, an add-in graphics card is used as the primary display. BIOS will output displays to both the primary
add-in video and the embedded video during POST and pre-boot environment. The embedded video is disabled
before the operating system boots. This option is set to
Enabled
by default.
NOTE:
When there are multiple add-in graphic cards installed in the system, the first card
discovered during PCI enumeration is selected as the primary video. You might have to re-arrange
the cards in the slots in order to control which card is the primary video.
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
Enabled
.
SR-IOV Global
Enable
Enables or disables the BIOS configuration of Single Root I/O Virtualization (SR-IOV) devices. This option is set to
Enabled
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.
Empty Slot Unhide
Enables or disables the root ports of all the empty slots that are accessible to the BIOS and OS. This option is set
to
Disabled
by default.
Memory Mapped
I/O above 4 GB
Enables or disables the support for the PCIe devices that need large amounts of memory. Enable this option only
for 64-bit operating systems. This option is set to
Enabled
by default.
Memory Mapped
I/O Base
When set to 12 TB, the system maps MMIO base to 12 TB. MMIO base default is 56 TB. The default value must
not be changed, unless addressing a known issue. Enable this feature for an OS that requires 44 bit PCIe
addressing.
Slot Disablement
Enables or disables the available PCIe slots on your system. The slot disablement feature controls the
configuration of the 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. Only slots that are present on the system are
available for control.
Table 33. Slot Disablement
Option
Description
Slot 1
Enables or disables or only the boot driver is disabled
for the PCIe slot 1. This option is set to
Enabled
by
default.
Slot 3
Enables or disables or only the boot driver is disabled
for the PCIe slot 3. This option is set to
Enabled
by
default.
Slot 4
Enables or disables or only the boot driver is disabled
for the PCIe slot 4. This option is set to
Enabled
by
default.
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Pre-operating system management applications