Dell EMC PowerEdge R940 Manual

Dell EMC PowerEdge R940
Installation and Service Manual
Regulatory Model: E41S Series
Regulatory Type: E41S001

Notes, cautions, and warnings
NOTE: A NOTE indicates important information that helps you make better use of your product.
CAUTION: A CAUTION indicates either potential damage to hardware or loss of data and tells you how to avoid the problem.
WARNING: A WARNING indicates a potential for property damage, personal injury, or death.
Copyright ©2017 Dell Inc. or its subsidiaries. All rights reserved. Dell, EMC, and other trademarks are trademarks of Dell Inc. or its subsidiaries. Other
trademarks may be trademarks of their respective owners.
2017 - 07
Rev. A00

Contents
1 PowerEdge R940 overview............................................................................................................................ 8
Front view of the system.................................................................................................................................................. 8
Left control panel view...............................................................................................................................................10
Right control panel......................................................................................................................................................13
Back view of the system..................................................................................................................................................14
NIC indicator codes.................................................................................................................................................... 15
Power supply unit indicator codes............................................................................................................................16
Hard drive indicator codes...............................................................................................................................................18
LCD panel.......................................................................................................................................................................... 19
Viewing Home screen................................................................................................................................................ 19
Setup menu................................................................................................................................................................ 20
View menu.................................................................................................................................................................. 20
Locating Service Tag of your system............................................................................................................................ 20
2 Documentation resources............................................................................................................................ 22
3 Technical specications............................................................................................................................... 24
System dimensions.......................................................................................................................................................... 24
System weight..................................................................................................................................................................25
Processor specications................................................................................................................................................. 25
PSU specications...........................................................................................................................................................26
System battery specications........................................................................................................................................ 26
Expansion bus specications..........................................................................................................................................26
Memory specications.....................................................................................................................................................27
Storage controller specications....................................................................................................................................27
Remote management port specications..................................................................................................................... 27
Drive specications..........................................................................................................................................................27
Hard drives..................................................................................................................................................................27
Ports and connectors specications..............................................................................................................................27
USB ports....................................................................................................................................................................27
NIC ports.....................................................................................................................................................................28
Serial port....................................................................................................................................................................28
VGA ports................................................................................................................................................................... 28
Video specications.........................................................................................................................................................28
Environmental specications..........................................................................................................................................29
Particulate and gaseous contamination specications .........................................................................................30
Standard operating temperature...............................................................................................................................31
Expanded operating temperature............................................................................................................................. 31
Expanded operating temperature restrictions.........................................................................................................31
Thermal restrictions...................................................................................................................................................32
4 Initial system setup and conguration.......................................................................................................... 33
Contents 3

Setting up your system................................................................................................................................................... 33
iDRAC conguration........................................................................................................................................................ 33
Options to set up iDRAC IP address........................................................................................................................33
Log in to iDRAC..........................................................................................................................................................34
Options to install the operating system.........................................................................................................................34
Methods to download rmware and drivers...........................................................................................................34
Downloading drivers and rmware.......................................................................................................................... 35
5 Pre-operating system management applications..........................................................................................36
Options to manage the pre-operating system applications........................................................................................36
System Setup................................................................................................................................................................... 36
Viewing System Setup.............................................................................................................................................. 36
System Setup details................................................................................................................................................. 37
System BIOS...............................................................................................................................................................37
iDRAC Settings utility................................................................................................................................................ 58
Device Settings.......................................................................................................................................................... 58
Dell Lifecycle Controller...................................................................................................................................................58
Embedded system management............................................................................................................................. 58
Boot Manager.................................................................................................................................................................. 58
Viewing Boot Manager..............................................................................................................................................58
Boot Manager main menu........................................................................................................................................ 59
One-shot BIOS boot menu.......................................................................................................................................59
System Utilities...........................................................................................................................................................59
PXE boot...........................................................................................................................................................................59
6 Installing and removing system components................................................................................................60
Safety instructions...........................................................................................................................................................60
Before working inside your system.................................................................................................................................61
After working inside your system....................................................................................................................................61
Recommended tools.........................................................................................................................................................61
Front bezel (optional).......................................................................................................................................................61
Removing the optional front bezel...........................................................................................................................62
Installing the optional front bezel............................................................................................................................. 62
System cover....................................................................................................................................................................63
Removing the system cover.....................................................................................................................................63
Installing the system cover....................................................................................................................................... 64
Inside the system............................................................................................................................................................. 65
Air shroud.......................................................................................................................................................................... 67
Removing the air shroud........................................................................................................................................... 67
Installing the air shroud............................................................................................................................................. 69
Cooling fans.......................................................................................................................................................................71
Removing the cooling fan.......................................................................................................................................... 71
Installing the cooling fan............................................................................................................................................72
Fan cage............................................................................................................................................................................73
Removing the fan cage............................................................................................................................................. 73
Installing the fan cage................................................................................................................................................74
4Contents

Removing the fan tray...............................................................................................................................................75
Installing the fan tray................................................................................................................................................. 76
Intrusion switch................................................................................................................................................................ 77
Removing an intrusion switch...................................................................................................................................77
Installing an intrusion switch.....................................................................................................................................79
Hard drives........................................................................................................................................................................80
Removing a hard drive blank.................................................................................................................................... 80
Installing a hard drive blank........................................................................................................................................81
Removing a hard drive............................................................................................................................................... 81
Installing a hard drive.................................................................................................................................................82
Removing the hard drive from the hard drive carrier............................................................................................83
Installing a hard drive into the hard drive carrier....................................................................................................84
Hard drive backplane.......................................................................................................................................................85
Hard drive backplane connectors............................................................................................................................ 85
Removing hard drive backplane...............................................................................................................................86
Installing hard drive backplane ................................................................................................................................ 88
Cable routing............................................................................................................................................................... 91
System memory............................................................................................................................................................... 95
General memory module installation guidelines...................................................................................................... 97
Mode-specic guidelines.......................................................................................................................................... 98
Removing a memory module....................................................................................................................................99
Installing a memory module.....................................................................................................................................100
Processors and heat sinks..............................................................................................................................................101
Removing a processor and heat sink module........................................................................................................ 101
Removing the processor from the processor and heat sink module................................................................. 102
Installing the processor into a processor and heat sink module......................................................................... 104
Installing a processor and heat sink module..........................................................................................................106
Processor expansion module........................................................................................................................................ 108
Removing the PEM..................................................................................................................................................108
Installing the PEM.................................................................................................................................................... 109
UPI cable routing........................................................................................................................................................111
PEM power board........................................................................................................................................................... 113
Removing the PEM power board............................................................................................................................113
Installing the PEM power board.............................................................................................................................. 114
Expansion cards and expansion card risers..................................................................................................................115
Expansion card installation guidelines.....................................................................................................................115
Removing expansion card riser blank .....................................................................................................................118
Installing expansion card riser blank........................................................................................................................118
Removing the expansion card riser ........................................................................................................................119
Installing the expansion card riser........................................................................................................................... 121
Removing the expansion card from expansion card riser....................................................................................122
Installing expansion card into expansion card riser...............................................................................................123
Network daughter card riser.........................................................................................................................................125
Removing the NDC riser..........................................................................................................................................125
Installing the NDC riser............................................................................................................................................126
Contents 5

Network daughter card..................................................................................................................................................127
Removing the NDC...................................................................................................................................................127
Installing the NDC.....................................................................................................................................................128
Storage controller card.................................................................................................................................................. 128
Removing the storage controller card....................................................................................................................129
Installing the storage controller card......................................................................................................................130
IDSDM/vFlash card (optional).......................................................................................................................................131
Removing the micro SD card................................................................................................................................... 131
Installing the micro SD card..................................................................................................................................... 131
Removing the optional IDSDM/vFlash card...........................................................................................................131
Installing the optional IDSDM/vFlash card............................................................................................................ 132
Power supply unit........................................................................................................................................................... 133
Hot spare feature......................................................................................................................................................134
Removing a power supply unit blank......................................................................................................................134
Installing a power supply unit blank........................................................................................................................135
Removing a power supply unit................................................................................................................................135
Installing a power supply unit.................................................................................................................................. 136
Wiring instructions for a DC power supply unit.................................................................................................... 137
System battery............................................................................................................................................................... 139
Replacing system battery........................................................................................................................................ 139
Internal USB memory key (optional)............................................................................................................................140
Replacing optional internal USB memory key....................................................................................................... 140
System board...................................................................................................................................................................141
Removing the system board.................................................................................................................................... 141
Installing the system board......................................................................................................................................142
Trusted Platform Module...............................................................................................................................................145
Replacing the Trusted Platform Module................................................................................................................145
Initializing TPM for BitLocker users........................................................................................................................146
Initializing the TPM 1.2 for TXT users.................................................................................................................... 146
Initializing the TPM 2.0 for TXT users................................................................................................................... 146
Control panel...................................................................................................................................................................146
Removing the right control panel........................................................................................................................... 147
Installing the right control panel..............................................................................................................................148
Removing the left control panel............................................................................................................................. 149
Installing the left control panel................................................................................................................................150
7 Using system diagnostics........................................................................................................................... 152
Dell Embedded System Diagnostics.............................................................................................................................152
Running the Embedded System Diagnostics from Boot Manager.....................................................................152
Running the Embedded System Diagnostics from the Dell Lifecycle Controller..............................................152
System diagnostic controls..................................................................................................................................... 153
8 Jumpers and connectors ........................................................................................................................... 154
System board jumpers and connectors.......................................................................................................................155
System board jumper settings...................................................................................................................................... 158
Disabling forgotten password........................................................................................................................................158
6Contents

9 Getting help............................................................................................................................................... 160
Contacting Dell............................................................................................................................................................... 160
Documentation feedback.............................................................................................................................................. 160
Accessing system information by using QRL..............................................................................................................160
Quick Resource Locator for PowerEdge R940 system........................................................................................161
Receiving automated support with SupportAssist .................................................................................................... 161
Contents 7

PowerEdge R940 overview
The PowerEdge R940 is a 3U rack system, which is available in the following congurations:
Table 1. PowerEdge R940 congurations
Congurations Specications
8-drive bay system (without PEM) • Two Intel Xeon scalable family processors
• 24 DIMM slots supporting up to 3 TB of memory
• Up to two AC or DC power supply units (PSUs)
• 8 hard drives or SSDs
24-drive bay system (with PEM) • Four Intel Xeon scalable family processors
• 48 DIMM slots supporting up to 6 TB of memory
• Up to two AC or DC power supply units (PSUs)
• 24 hard drives or SSDs
NOTE: The PowerEdge R940 system supports hot swappable hard drives.
NOTE: The PowerEdge R940 system is also available in a diskless (no backplane)
conguration.
Topics:
• Front view of the system
• Back view of the system
• Hard drive indicator codes
• LCD panel
• Locating Service Tag of your system
Front view of the system
You can access the following components from the front of the system:
1
8 PowerEdge R940 overview

Figure 1. Front view of 24 x 2.5 inch hard drive system
Figure 2. Front view of 8 x 2.5 inch hard drive system
Table 2. Features available on the front of the system
Item Indicator, button, or
connector
Icon Description
1 Left control panel N/A Contains the system health and system ID, status LED, and optional
iDRAC Quick Sync 2 (wireless).
2 Hard-drive slots N/A Enable you to install hard drives that are supported on your system.
For more information about hard drives, see the Technical
specications section.
3 Right control panel N/A Contains the power button, VGA port, iDRAC Direct port and USB
ports.
4 Information tag N/A The Information Tag is a slide-out label panel that contains system
information such as Service Tag, NIC, MAC address, and so on. If you
have opted for secure default access to iDRAC, the Information tag
also contains the iDRAC secure default password.
5 Hard-drive bay blank N/A For the 8 x 2.5 inch hard drive system, a hard-drive bay blank is
installed in the hard drive slots 8 - 23.
PowerEdge R940 overview 9

Left control panel view
Figure 3. Left control panel view
Table 3. Left control panel features
Item Indicator, button, or
connector
Icon Description
1 Status LED indicators N/A Indicate the status of the system. For more information, see the
Status LED indicators section.
2 System health and system
ID indicator
Indicates the system health. For more information, see the System
health and system ID indicator codes section.
3 iDRAC Quick Sync 2
wireless indicator
(optional)
Indicates if the iDRAC Quick Sync 2 wireless option is activated. The
Quick Sync 2 feature allows management of the system using mobile
devices. This feature aggregates hardware/rmware inventory and
various system level diagnostic/error information that can be used in
troubleshooting the system. You can access system inventory, Dell
Lifecycle Controller logs or system logs, system health status, and
also congure iDRAC, BIOS, and networking parameters. You can also
launch the virtual Keyboard, Video, and Mouse (KVM) viewer and
virtual Kernel based Virtual Machine (KVM), on a supported mobile
device. For more information, see the Integrated Dell Remote Access
Controller User's Guide at Dell.com/idracmanuals.
Status LED indicators
NOTE: The status LED indicators are always o and only turns on to a solid amber if any error
occurs.
Table 4. Status LED indicators and descriptions
Icon Description Condition Corrective action
Drive indicator The indicator turns solid amber if
there is a drive error. • Check the System Event Log to determine if the drive
has an error.
10 PowerEdge R940 overview

Icon Description Condition Corrective action
• Run the appropriate Online Diagnostics test. Restart
the system and run embedded diagnostics (ePSA).
• If the drives are congured in a RAID array, restart the
system, and enter the host adapter conguration
utility program.
Temperature
indicator
The indicator turns solid amber if the
system experiences a thermal error
(for example, the ambient
temperature is out of range or there is
a fan failure).
Ensure that none of the following conditions exist:
• A cooling fan has been removed or has failed.
• System cover, air shroud, memory module blank, or
back ller bracket is removed.
• Ambient temperature is too high.
• External airow is obstructed.
If the problem persists, see the Getting help section.
Electrical indicator The indicator turns solid amber if the
system experiences an electrical error
(for example, voltage out of range, or
a failed power supply unit (PSU) or
voltage regulator).
Check the System Event Log or system messages for the
specic issue. If it is due to a problem with the PSU,
check the LED on the PSU. Reseat the PSU. If the
problem persists, see the Getting help section.
Memory indicator The indicator turns solid amber if a
memory error occurs.
Check the System Event Log or system messages for the
location of the failed memory. Reseat the memory
module. If the problem persists, see the Getting help
section.
PCIe indicator The indicator turns solid amber if a
PCIe card experiences an error.
Restart the system. Update any required drivers for the
PCIe card. Reinstall the card. If the problem persists, see
the Getting help section.
NOTE: For more information about the
supported PCIe cards, see the Expansion card
installation guidelines section.
System health and system ID indicator codes
The system health and system ID indicator is located on the left control panel of your system.
Figure 4. System health and system ID indicators
Table 5. System health and system ID indicator codes
System health and system ID indicator code Condition
Solid blue Indicates that the system is turned on, system is healthy, and system
ID mode is not active. Press the system health and system ID button
to switch to system ID mode.
Blinking blue Indicates that the system ID mode is active. Press the system health
and system ID button to switch to system health mode.
PowerEdge R940 overview 11

System health and system ID indicator code Condition
Solid amber Indicates that the system is in fail-safe mode. If the problem persists,
see the Getting help section.
Blinking amber Indicates that the system is experiencing a fault. Check the System
Event Log or the LCD panel, if available on the bezel, for specic error
message. For more information about error messages, see the Dell
Event and Error Messages Reference Guide at Dell.com/
openmanagemanuals > OpenManage software.
iDRAC Quick Sync 2 indicator codes
iDRAC Quick Sync 2 module (optional) is located on the left control panel of your system.
Figure 5. iDRAC Quick Sync 2 indicators
Table 6. iDRAC Quick Sync 2 indicators and descriptions
iDRAC Quick Sync 2 indicator
code
Condition Corrective action
O (default state) Indicates that the iDRAC Quick Sync 2
feature is turned o. Press the iDRAC Quick
Sync 2 button to turn on the iDRAC Quick
Sync 2 feature.
If the LED fails to turn on, reseat the left control panel
ex cable and check again. If the problem persists,
see the Getting help section.
Solid white Indicates that iDRAC Quick Sync 2 is ready
to communicate. Press the iDRAC Quick
Sync 2 button to turn o.
If the LED fails to turn o, restart the system. If the
problem persists, see the Getting help section.
Blinks white rapidly Indicates data transfer activity. If the indicator continues to blink indenitely, see the
Getting help section.
Blinks white slowly Indicates that rmware update is in
progress.
If the indicator continues to blink indenitely, see the
Getting help section.
Blinks white ve times rapidly and
then turns o
Indicates that the iDRAC Quick Sync 2
feature is disabled.
Check if iDRAC Quick Sync 2 feature is congured to
be disabled by iDRAC. If the problem persists, see the
Getting help section. For more information, see
Integrated Dell Remote Access Controller User's
Guide at Dell.com/idracmanuals or Dell
OpenManage Server Administrator User’s Guide at
Dell.com/openmanagemanuals.
Solid amber Indicates that the system is in fail-safe
mode.
Restart the system. If the problem persists, see the
Getting help section.
Blinking amber Indicates that the iDRAC Quick Sync 2
hardware is not responding properly.
Restart the system. If the problem persists, see the
Getting help section.
12 PowerEdge R940 overview

Right control panel
Figure 6. Right control panel
Table 7. Right control panel
Item Button or port Icon Description
1 Power button Indicates if the system is turned on or o. Press the power button to
manually turn on or o the system.
NOTE: Press the power button to gracefully shut down an
ACPI-compliant operating system.
2 iDRAC Direct port The iDRAC Direct port is micro USB 2.0-compliant. This port enables
you to access the iDRAC Direct features. For more information, see
the iDRAC User’s Guide at Dell.com/idracmanuals.
3 USB ports The USB 3.0 ports are 9-pin, USB 3.0-compliant. These ports enable
you to connect USB devices to the system.
4 VGA port Enables you to connect a display device to the system. For more
information, see the Technical specications section.
iDRAC Direct LED indicator codes
The iDRAC Direct LED indicator lights up to indicate that the port is connected and is being used as a part of the iDRAC subsystem.
You can congure iDRAC Direct by using a USB to micro USB (type AB) cable, which you can connect to your laptop or tablet. The
following table describes iDRAC Direct activity when the iDRAC Direct port is active:
PowerEdge R940 overview 13

Table 8. iDRAC Direct LED indicator codes
iDRAC Direct LED
indicator code
Condition
Solid green for two seconds Indicates that the laptop or tablet is connected.
Flashing green (on for two
seconds and o for two
seconds)
Indicates that the laptop or tablet connected is recognized.
Turns o Indicates that the laptop or tablet is unplugged.
Back view of the system
You can access the following components from the back of the system:
Figure 7. Back view features
Table 9. Features available on the back of the system
Item Slot, button, or connector Icon Description
1 expansion card riser (right) N/A The expansion card riser (right) supports up to three full-height PCI
Express expansion cards. For more information, see the Expansion card
installation guidelines section.
2 expansion card slot N/A The expansion slots on the system board supports full-height half-length
PCI Express expansion cards.
3 NIC port (4) The NIC ports that are integrated on the network daughter card (NDC)
provide network connectivity. For more information about the supported
congurations, see the Technical specications section.
4 expansion card riser (left) N/A The expansion card riser (left) supports up to three full-height PCI
Express expansion cards. For more information, see the Expansion card
installation guidelines section.
5 Power supply unit (2) For more information, see the Technical specications section.
14 PowerEdge R940 overview

Item Slot, button, or connector Icon Description
6 Video port Enables you to connect a display device to the system. For more
information, see the Technical specications section.
7 Serial port Enables you to connect a serial device to the system. For more
information, see the Technical specications section.
8 iDRAC9 Enterprise port Enables you to remotely access iDRAC. For more information, see the
iDRAC User’s Guide at Dell.com/idracmanuals.
9 USB port (2) The USB ports are 9-pin and 3.0-compliant. These ports enable you to
connect USB devices to the system.
10 System identication button The System Identication (ID) button is available on the front and back of
the systems. Press the button to identify a system in a rack by turning on
the system ID button. You can also use the system ID button to reset
iDRAC and to access BIOS using the step through mode.
11 Status indicator cable port Enables you to connect the status indicator cable and view system status
when the CMA is installed.
NIC indicator codes
Each NIC on the back panel has indicators that provide information about the activity and link status. The activity LED indicator indicates if
data is owing through the NIC, and the link LED indicator indicates the speed of the connected network.
Figure 8. NIC indicator codes
1link LED indicator 2 activity LED indicator
Table 10. NIC indicator codes
Status Condition
Link and activity indicators are o The NIC is not connected to the network.
Link indicator is green and activity indicator is blinking green The NIC is connected to a valid network at its maximum port speed and
data is being sent or received.
Link indicator is amber and activity indicator is blinking
green
The NIC is connected to a valid network at less than its maximum port
speed and data is being sent or received.
Link indicator is green and activity indicator is o The NIC is connected to a valid network at its maximum port speed and
data is not being sent or received.
Link indicator is amber and activity indicator is o The NIC is connected to a valid network at less than its maximum port
speed and data is not being sent or received.
Link indicator is blinking green and activity is o NIC identify is enabled through the NIC conguration utility.
PowerEdge R940 overview 15

Power supply unit indicator codes
AC power supply units (PSUs) have an illuminated translucent handle that serves as an indicator and DC PSUs have an LED that serves as
an indicator. The indicator shows whether power is present or a power fault has occurred.
Figure 9. AC PSU status indicator
1 AC PSU status indicator/handle
Table 11. AC PSU status indicator codes
Power indicator codes Condition
Green A valid power source is connected to the PSU and the PSU is operational.
Blinking amber Indicates a problem with the PSU.
Not illuminated Power is not connected to the PSU.
Blinking green When the rmware of the PSU is being updated, the PSU handle blinks green.
CAUTION: Do not disconnect the power cord or unplug the PSU when updating rmware. If
rmware update is interrupted, the PSUs do not function.
Blinking green and turns o When hot-plugging a PSU, the PSU handle blinks green ve times at a rate of 4 Hz and turns o. This
indicates a PSU mismatch with respect to eciency, feature set, health status, or supported voltage.
CAUTION: If two PSUs are installed, both the PSUs must have the same type of label; for
example, Extended Power Performance (EPP) label. Mixing PSUs from previous generations of
PowerEdge servers is not supported, even if the PSUs have the same power rating. This results
in a PSU mismatch condition or failure to turn the system on.
CAUTION: When correcting a PSU mismatch, replace only the PSU with the blinking indicator.
Swapping the PSU to make a matched pair can result in an error condition and unexpected
system shutdown. To change from a high output conguration to a low output conguration or
vice versa, you must turn o the system.
CAUTION: AC PSUs support both 240 V and 120 V input voltages with the exception of Titanium
PSUs, which support only 240 V. When two identical PSUs receive dierent input voltages, they
can output dierent wattages, and trigger a mismatch.
CAUTION: If two PSUs are used, they must be of the same type and have the same maximum
output power.
CAUTION: Combining AC and DC PSUs is not supported and triggers a mismatch.
16 PowerEdge R940 overview

Figure 10. DC PSU status indicator
1 DC PSU status indicator
Table 12. DC PSU status indicator codes
Power indicator codes Condition
Green A valid power source is connected to the PSU and the PSU is operational.
Blinking amber Indicates a problem with the PSU.
Not illuminated Power is not connected to the PSU.
Blinking green When hot-plugging a PSU, the PSU indicator blinks green. This indicates that there is a PSU mismatch
with respect to eciency, feature set, health status, or supported voltage.
CAUTION: If two PSUs are installed, both the PSUs must have the same type of label; for
example, Extended Power Performance (EPP) label. Mixing PSUs from previous generations
of PowerEdge servers is not supported, even if the PSUs have the same power rating. This
results in a PSU mismatch condition or failure to turn the system on.
CAUTION: When correcting a PSU mismatch, replace only the PSU with the blinking
indicator. Swapping the PSU to make a matched pair can result in an error condition and
unexpected system shutdown. To change from a High Output conguration to a Low Output
conguration or vice versa, you must turn o the system.
CAUTION: If two PSUs are used, they must be of the same type and have the same
maximum output power.
CAUTION: Combining AC and DC PSUs is not supported and triggers a mismatch.
PowerEdge R940 overview 17

Hard drive indicator codes
Each hard drive carrier has an activity LED indicator and a status LED indicator. The indicators provide information about the current status
of the hard drive. The activity LED indicator indicates whether the hard drive is currently in use or not. The status LED indicator indicates
the power condition of the drive.
Figure 11. Hard drive indicators
1hard drive activity LED indicator 2 hard drive status LED indicator
3 hard drive
NOTE: If the hard drive is in the Advanced Host Controller Interface (AHCI) mode, the status LED indicator does not turn on.
Table 13. Hard drive indicator codes
Hard drive status indicator code Condition
Flashes green twice per second Identifying drive or preparing for removal.
O Drive ready for removal.
NOTE: The drive status indicator remains o until all drives are
initialized after the system is turned on. Drives are not ready
for removal during this time.
Flashes green, amber, and then turns o Predicted drive failure.
Flashes amber four times per second Drive failed.
Flashes green slowly Drive rebuilding.
Solid green Drive online.
Flashes green for three seconds, amber for three seconds, and
then turns o after six seconds
Rebuild stopped.
18 PowerEdge R940 overview

LCD panel
The LCD panel provides system information, status, and error messages to indicate if the system is functioning correctly or requires
attention. The LCD panel can be used to congure or view the system’s iDRAC IP address. For more information about error messages, see
the Dell Event and Error Messages Reference Guide at Dell.com/openmanagemanuals > OpenManage software.
The LCD panel is available only on the optional LCD bezel. The optional LCD bezel is hot pluggable.
The statuses and conditions of the LCD panel are outlined here:
• The LCD backlight is white during normal operating conditions.
• When the system needs attention, the LCD backlight turns amber, and displays an error code followed by descriptive text.
NOTE: If the system is connected to a power source and an error is detected, the LCD turns amber regardless of whether
the system is turned on or o.
• When the system turns o and there are no errors, LCD enters the standby mode after ve minutes of inactivity. Press any button on
the LCD to turn it on.
• If the LCD panel stops responding, remove the bezel and reinstall it. If the problem persists, see the Getting help section.
• The LCD backlight remains o if LCD messaging is turned o using the iDRAC utility, the LCD panel, or other tools.
Figure 12. LCD panel features
Table 14. LCD panel features
Item Button or display Description
1 Left Moves the cursor back in one-step increments.
2 Select Selects the menu item highlighted by the cursor.
3 Right Moves the cursor forward in one-step increments.
During message scrolling:
• Press and hold the right button to increase scrolling speed.
• Release the button to stop.
NOTE: The display stops scrolling when the button is released. After 45
seconds of inactivity, the display starts scrolling.
4 LCD display Displays system information, status, and error messages or iDRAC IP address.
Viewing Home screen
The Home screen displays user-congurable information about the system. This screen is displayed during normal system operation when
there are no status messages or errors. When the system turns o and there are no errors, LCD enters the standby mode after ve
minutes of inactivity. Press any button on the LCD to turn it on.
1 To view the Home screen, press one of the three navigation buttons (Select, Left, or Right).
2 To navigate to the Home screen from another menu, complete the following steps:
PowerEdge R940 overview 19

a Press and hold the navigation button till the up arrow is displayed.
b Navigate to the Home icon using the up arrow .
c Select the Home icon.
d On the Home screen, press the Select button to enter the main menu.
Setup menu
NOTE: When you select an option in the Setup menu, you must conrm the option before proceeding to the next
action.
Option Description
iDRAC Select DHCP or Static IP to congure the network mode. If Static IP is selected, the available elds are IP,
Subnet (Sub), and Gateway (Gtw). Select Setup DNS to enable DNS and to view domain addresses. Two
separate DNS entries are available.
Set error Select SEL to view LCD error messages in a format that matches the IPMI description in the SEL. This enables you
to match an LCD message with an SEL entry.
Select Simple to view LCD error messages in a simplied user-friendly description. For more information about
error messages, see the Dell Event and Error Messages Reference Guide at Dell.com/openmanagemanuals >
OpenManage software.
Set home Select the default information to be displayed on the Home screen. See View menu section for the options and
option items that can be set as the default on the Home screen.
View menu
NOTE: When you select an option in the View menu, you must conrm the option before proceeding to the next
action.
Option Description
iDRAC IP Displays the IPv4 or IPv6 addresses for iDRAC9. Addresses include DNS (Primary and Secondary), Gateway, IP,
and Subnet (IPv6 does not have Subnet).
MAC Displays the MAC addresses for iDRAC, iSCSI, or Network devices.
Name Displays the name of the Host, Model, or User String for the system.
Number Displays the Asset tag or the Service tag for the system.
Power Displays the power output of the system in BTU/hr or Watts. The display format can be congured in the Set
home submenu of the Setup menu.
Temperature Displays the temperature of the system in Celsius or Fahrenheit. The display format can be congured in the Set
home submenu of the Setup menu.
Locating Service Tag of your system
You can identify your system using the unique Express Service Code and Service Tag. Pull out the information tag in front of the system to
view the Express Service Code and Service Tag. Alternatively, the information may be on a sticker on the chassis of the system. The mini
Enterprise Service Tag (EST) is found on the back of the system. This information is used by Dell to route support calls to the appropriate
personnel.
20 PowerEdge R940 overview