Dell EMC PowerEdge R940 Installation And Service 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 specications............................................................................................................................... 24
System dimensions.......................................................................................................................................................... 24
System weight..................................................................................................................................................................25
Processor specications................................................................................................................................................. 25
PSU specications...........................................................................................................................................................26
System battery specications........................................................................................................................................ 26
Expansion bus specications..........................................................................................................................................26
Memory specications.....................................................................................................................................................27
Storage controller specications....................................................................................................................................27
Remote management port specications.....................................................................................................................27
Drive specications..........................................................................................................................................................27
Hard drives..................................................................................................................................................................27
Ports and connectors specications..............................................................................................................................27
USB ports....................................................................................................................................................................27
NIC ports.....................................................................................................................................................................28
Serial port....................................................................................................................................................................28
VGA ports................................................................................................................................................................... 28
Video specications.........................................................................................................................................................28
Environmental specications..........................................................................................................................................29
Particulate and gaseous contamination specications .........................................................................................30
Standard operating temperature...............................................................................................................................31
Expanded operating temperature.............................................................................................................................31
Expanded operating temperature restrictions.........................................................................................................31
Thermal restrictions...................................................................................................................................................32
4 Initial system setup and conguration..........................................................................................................33
Contents
3
Setting up your system................................................................................................................................................... 33
iDRAC conguration........................................................................................................................................................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
Contents
4
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-specic 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
Contents
6
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 congurations:
Table 1. PowerEdge R940 congurations
Congurations Specications
1
8-drive bay system (without PEM)
24-drive bay system (with PEM)
NOTE: The PowerEdge R940 system supports hot swappable hard drives.
NOTE: The PowerEdge R940 system is also available in a diskless (no backplane)
conguration.
Topics:
• Front view of the system
• Back view of the system
• Hard drive indicator codes
• LCD panel
• Locating Service Tag of your system
• 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
• 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
Front view of the system
You can access the following components from the front of the system:
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
1 Left control panel N/A Contains the system health and system ID, status LED, and optional
2 Hard-drive slots N/A
3 Right control panel N/A Contains the power button, VGA port, iDRAC Direct port and USB
4 Information tag N/A
5 Hard-drive bay blank N/A For the 8 x 2.5 inch hard drive system, a hard-drive bay blank is
Icon Description
iDRAC Quick Sync 2 (wireless).
Enable you to install hard drives that are supported on your system.
For more information about hard drives, see the Technical
specications section.
ports.
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.
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
1 Status LED indicators N/A
2 System health and system
ID indicator
3 iDRAC Quick Sync 2
wireless indicator
(optional)
Icon Description
Status LED indicators
: The status LED indicators are always o and only turns on to a solid amber if any error
NOTE
occurs.
Indicate the status of the system. For more information, see the
Status LED indicators section.
Indicates the system health. For more information, see the System
health and system ID indicator codes section.
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 congure 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.
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.
10 PowerEdge R940 overview
• Check the System Event Log to determine if the drive
has an error.
Icon Description Condition Corrective action
• Run the appropriate Online Diagnostics test. Restart
the system and run embedded diagnostics (ePSA).
• If the drives are congured in a RAID array, restart the
system, and enter the host adapter conguration
utility program.
Temperature
indicator
Electrical indicator The indicator turns solid amber if the
Memory indicator The indicator turns solid amber if a
PCIe indicator The indicator turns solid amber if a
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).
system experiences an electrical error
(for example, voltage out of range, or
a failed power supply unit (PSU) or
voltage regulator).
memory error occurs.
PCIe card experiences an error.
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 airow is obstructed.
If the problem persists, see the Getting help section.
Check the System Event Log or system messages for the
specic 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.
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.
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 specic 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
O (default state) Indicates that the iDRAC Quick Sync 2
Solid white Indicates that iDRAC Quick Sync 2 is ready
Blinks white rapidly Indicates data transfer activity. If the indicator continues to blink indenitely, see the
Blinks white slowly Indicates that rmware update is in
Blinks white ve times rapidly and
then turns o
Solid amber Indicates that the system is in fail-safe
Condition Corrective action
If the LED fails to turn on, reseat the left control panel
feature is turned o. Press the iDRAC Quick
Sync 2 button to turn on the iDRAC Quick
Sync 2 feature.
to communicate. Press the iDRAC Quick
Sync 2 button to turn o.
progress.
Indicates that the iDRAC Quick Sync 2
feature is disabled.
mode.
ex cable and check again. If the problem persists,
see the Getting help section.
If the LED fails to turn o, restart the system. If the
problem persists, see the Getting help section.
Getting help section.
If the indicator continues to blink indenitely, see the
Getting help section.
Check if iDRAC Quick Sync 2 feature is congured 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.
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.
12 PowerEdge R940 overview
Restart the system. If the problem persists, see the
Getting help section.
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
3 USB ports
4 VGA 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.
The USB 3.0 ports are 9-pin, USB 3.0-compliant. These ports enable
you to connect USB devices to the system.
Enables you to connect a display device to the system. For more
information, see the Technical specications 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 congure 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
Solid green for two seconds Indicates that the laptop or tablet is connected.
Flashing green (on for two
seconds and o for two
seconds)
Turns o Indicates that the laptop or tablet is unplugged.
Condition
Indicates that the laptop or tablet connected is recognized.
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
2 expansion card slot N/A
3 NIC port (4)
4 expansion card riser (left) N/A
5 Power supply unit (2) For more information, see the Technical specications section.
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.
The expansion slots on the system board supports full-height half-length
PCI Express expansion cards.
The NIC ports that are integrated on the network daughter card (NDC)
provide network connectivity. For more information about the supported
congurations, see the Technical specications section.
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.
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 specications section.
7 Serial port
8 iDRAC9 Enterprise port
9 USB port (2)
10 System identication button
11 Status indicator cable port Enables you to connect the status indicator cable and view system status
Enables you to connect a serial device to the system. For more
information, see the Technical specications section.
Enables you to remotely access iDRAC. For more information, see the
iDRAC User’s Guide at Dell.com/idracmanuals.
The USB ports are 9-pin and 3.0-compliant. These ports enable you to
connect USB devices to the system.
The System Identication (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.
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
1
link 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
Link indicator is green and activity indicator is o The NIC is connected to a valid network at its maximum port speed and
Link indicator is amber and activity indicator is o The NIC is connected to a valid network at less than its maximum port
Link indicator is blinking green and activity is o NIC identify is enabled through the NIC conguration utility.
The NIC is connected to a valid network at less than its maximum port
speed and data is being sent or received.
data is not being sent or received.
speed and data is not being sent or received.
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 eciency, 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 conguration to a low output conguration 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 dierent input voltages, they
can output dierent 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 eciency, 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 conguration to a Low Output
conguration 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
1
hard 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 congure 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-congurable 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 conrm the option before proceeding to the next
action.
Option Description
iDRAC Select DHCP or Static IP to congure 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 simplied 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 conrm 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 congured 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 congured 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
Figure 13. Locating Service Tag of your system
1 information tag (top view) 2 information tag (back view)
3 OpenManage Mobile (OMM) label 4 iDRAC MAC address and iDRAC secure password label
5 Service Tag
PowerEdge R940 overview 21
Documentation resources
This section provides information about the documentation resources for your system.
Table 15. Additional documentation resources for your system
Task Document Location
Setting up your system
For more information about installing and securing
the system into a rack, see the rack documentation
included with your rack solution.
Dell.com/poweredgemanuals
2
For information about setting up and turning on the
system, see the Getting Started Guide document
that is shipped with your system.
Conguring your system For information about the iDRAC features,
conguring and logging in to iDRAC, and managing
your system remotely, see the Integrated Dell
Remote Access Controller User's Guide.
For information about installing the operating
system, see the operating system documentation.
For information about understanding Remote
Access Controller Admin (RACADM)
subcommands and supported RACADM interfaces,
see the RACADM Command Line Reference Guide
for iDRAC.
For information about updating drivers and
rmware, see the Methods to download rmware
and drivers section in this document.
Managing your system For information about systems management
software oered by Dell, see the Dell OpenManage
Systems Management Overview Guide.
For information about setting up, using, and
troubleshooting OpenManage, see the Dell
OpenManage Server Administrator User’s Guide.
Dell.com/poweredgemanuals
Dell.com/idracmanuals
Dell.com/operatingsystemmanuals
Dell.com/idracmanuals
To download drivers: Dell.com/support/drivers
Dell.com/openmanagemanuals
Dell.com/openmanagemanuals
22 Documentation resources
For information about installing, using, and
troubleshooting Dell OpenManage Essentials, see
the Dell OpenManage Essentials User’s Guide.
For information about installing and using Dell
SupportAssist, see the Dell EMC SupportAssist
Enterprise User’s Guide.
For understanding the features of Dell Lifecycle
Controller, see the Dell Lifecycle Controller User’s
Guide.
Dell.com/openmanagemanuals
Dell.com/serviceabilitytools
Dell.com/idracmanuals
Task Document Location
For information about partner programs enterprise
systems management, see the OpenManage
Connections Enterprise Systems Management
documents.
For information about viewing inventory,
performing conguration and monitoring tasks,
remotely turning on or o servers, and enabling
alerts for events on servers and components using
the Dell Chassis Management Controller (CMC),
see the CMC User’s Guide.
Working with the Dell
PowerEdge RAID controllers
Understanding event and error
messages
Troubleshooting your system For information about identifying and
For information about understanding the features
of the Dell PowerEdge RAID controllers (PERC),
Software RAID controllers, or BOSS card and
deploying the cards, see the Storage controller
documentation.
For information about checking the event and error
messages generated by the system rmware and
agents that monitor system components, see the
Dell Event and Error Messages Reference Guide.
troubleshooting the PowerEdge server issues, see
the Server Troubleshooting Guide.
Dell.com/openmanagemanuals
Dell.com/esmmanuals
Dell.com/storagecontrollermanuals
Dell.com/openmanagemanuals > OpenManage
software
Dell.com/poweredgemanuals
Documentation resources
23
Technical specications
The technical and environmental specications of your system are outlined in this section.
Topics:
• System dimensions
• System weight
• Processor specications
• PSU specications
• System battery specications
• Expansion bus specications
• Memory specications
• Storage controller specications
• Remote management port specications
• Drive specications
• Ports and connectors specications
• Video specications
• Environmental specications
3
System dimensions
This section describes the physical dimensions of the system.
24 Technical specications
Figure 14. System dimensions of PowerEdge R940 system
Table 16. System dimensions of PowerEdge R940 system
System Xa Xb Y Za (with
PowerEdge R940 482.0 mm
(18.9 inches)
434.0 mm
(17.08
inches)
130.3 mm
(5.13
inches)
bezel)
35.0 mm
(1.37
inches)
Za (without
bezel)
22.0 mm
(0.86 inches)
Zb Zc
726.2 mm
(28.59
inches)
System weight
Table 17. System weight of PowerEdge R940 system
System Maximum weight (with all hard drive/SSDs)
PowerEdge R940 49.9 kg (110.01 lb)
Processor specications
The PowerEdge R940 system supports two or four Intel Xeon scalable family processors.
Technical
777.046 mm
(30.59 inches)
specications 25
PSU specications
The PowerEdge R940 system supports up to two AC or DC power supply units (PSUs).
Table 18. PSU specications
PSU Class Heat dissipation
1100 W AC Platinum 4100 BTU/hr 50/60 Hz 100–240 V AC, autoranging 12 A–6.5 A
1100 W DC N/A 4416 BTU/hr N/A –(48–60) V DC, autoranging 32 A
1100 W Mixed
Mode HVDC (for
China and Japan
only)
1600 W AC Platinum 6000 BTU/hr 50/60 Hz 100–240 V AC, autoranging 10 A
2000 W AC Platinum 7500 BTU/hr 50/60 Hz 100–240 V AC, autoranging 11.5 A
2400 W AC Platinum 9000 BTU/hr 50/60 Hz 100-240 V AC, autoranging 16 A
NOTE: Heat dissipation is calculated using the PSU wattage rating.
NOTE: This system is also designed to connect to the IT power systems with a phase to phase voltage not exceeding 240 V.
NOTE: If a system with 2400 W AC PSU operates at low line 100–120 V AC, then the power rating per PSU is derated to 1400 W.
NOTE: If a system with 2000 W AC PSU operates at low line 100–120 V AC, then the power rating per PSU is derated to 1000 W.
NOTE: If a system with 1600 W AC PSU operates at low line 100–120 V AC, then the power rating per PSU is derated to 800 W.
NOTE: If system with 1100 W AC PSU or 1100 W Mixed Mode HVDC PSU operates at low line 100–120 V AC, then the power
rating per PSU is derated to 1050 W.
Platinum 4100 BTU/hr 50/60 Hz 100–240 V AC, autoranging 12 A–6.5 A
N/A 4100 BTU/hr N/A 200–380 V DC, autoranging 6.4 A–3.2 A
(maximum)
Frequency Voltage Current
System battery specications
The PowerEdge R940 system supports CR 2032 3.0-V lithium coin cell system battery.
Expansion bus specications
The PowerEdge R940 system supports PCI express (PCIe) generation 3 expansion cards, which you can install on the expansion slots
available on the system board. If you are using PowerEdge R940 system with four processor conguration, then you can also install the
cards by using the expansion card riser. This system supports up to two expansion card risers. The following table provides the expansion
card riser specications:
Table 19. Expansion card riser
Riser PCIe slot on the
Riser 2 (IO_RISER2)
26 Technical specications
expansion card riser
Slot 8 Processor 3 full height 3/4 length x16 x16
Slot 9 Processor 3 full height half length x16 x16
Slot 10 Processor 3 full height half length x16 x16
congurations
Processor
connection
PCIe slots on riser
(Height)
PCIe slots
on riser
(length)
Link width Slot width
Riser PCIe slot on the
expansion card riser
Slot 11 Processor 4 full height 3/4 length x16 x16
Processor
connection
PCIe slots on riser
(Height)
PCIe slots
on riser
(length)
Link width Slot width
Riser 3 (IO_RISER3)
Slot 12 Processor 4 full height half length x16 x16
Slot 13 Processor 4 full height half length x16 x16
Memory specications
Table 20. Memory specications
Memory module
sockets
Twenty four 288-pins
(dual processor)
Forty eight 288-pins
(with quad processor)
Architecture Memory capacity Minimum RAM Maximum RAM
2667 MT/s, 2400 MT/s, 2133 MT/s
DDR4 RDIMMs or LRDIMMs with
support for advanced ECC or
memory optimized operation
• 8 GB, 16 GB, 32 GB
(single or dual rank)
RDIMMs
• 64 GB, 128 GB
(quad or octal rank)
LRDIMMs
16 GB 3 TB
32 GB 6 TB
Storage controller specications
The PowerEdge R940 system supports:
• Internal storage controller cards: PowerEdge RAID Controller (PERC) H330, PERC H740P, S140 (NVMe drives only), and NVMe PCIe
SSD adapter.
• External storage controller cards: PERC H840 and 12Gbps SAS HBA.
Remote management port specications
The PowerEdge R940 system supports one dedicated 1Gbe Ethernet port with optional card and up to two optional shared NIC ports.
Drive specications
Hard drives
The PowerEdge R940 system supports:
• Up to twenty four 2.5-inch, internal, hot swappable SAS or SATA SSDs/hard drives
• Up to eight 2.5-inch internal, hot swappable SAS or SATA SSDs/hard drives
Ports and connectors specications
USB ports
The PowerEdge R940 system supports:
Technical
specications 27
• Two USB 3.0-compliant ports on the front panel
• Two USB 3.0-compliant ports on the back panel
• One USB 3.0-compliant internal port
NIC ports
The PowerEdge R940 system supports up to four NDC ports on the back panel, which are available in the following congurations:
• Four RJ-45 ports that support 10, 100, and 1000 Mbps
• Four RJ-45 ports that support 100 M, 1 G and 10 Gbps
• Four RJ-45 ports, where two ports support maximum of 10 G and the other two ports maximum of 1 G
• Two RJ-45 ports that support up to 1 Gbps and 2 SFP+ ports that support up to 10 Gbps
• Four SFP+ ports that support up to 10 Gbps
• Two SFP28 ports that support up to 25 Gbps
Serial port
The PowerEdge R940 system supports one serial port on the back panel, which is a 9-pin connector, Data Terminal Equipment (DTE),
16550-compliant.
VGA ports
The PowerEdge R940 system supports two 15-pin VGA ports. One of the VGA ports is located on the front of the system and the other
port is located on the back of the system.
Video specications
The PowerEdge R940 system supports Integrated VGA controller with 4 MB SPI capacity.
Table 21. Resolution information for video modes
Resolution Refresh rate (Hz)
1024 x 768 60
1280 x 800 60
1280 x 1024 60
1360 x 768 60
1440 x 900 60
1600 x 900 60 (RB)
1600 x 1200 60
1680 x 1050 60 (RB)
1920 x 1080 60
1920 x 1200 60
28 Technical specications
Environmental specications
NOTE: For additional information about environmental measurements for specic system congurations, see Dell.com/
environmental_datasheets.
Table 22. Temperature specications
Temperature Specications
Storage –40°C to 65°C (–40°F to 149°F)
Continuous operation (for altitude less than 950 m or 3117
ft)
Maximum temperature gradient (operating and storage) 20°C/h (68°F/h)
Table 23. Relative humidity specications
Relative humidity Specications
Storage 5% to 95% RH with 33°C (91°F) maximum dew point. Atmosphere must be
Operating 10% to 80% relative humidity with 26°C (78.8°F) maximum dew point.
Table 24. Maximum vibration specications
Maximum vibration Specications
Operating 0.26 G
Storage 1.87 G
Table 25. Maximum shock specications
Maximum shock Specications
10°C to 35°C (50°F to 95°F) with no direct sunlight on the equipment.
non-condensing at all times.
at 5 Hz to 350 Hz (all operation orientations).
rms
at 10 Hz to 500 Hz for 15 min (all six sides tested).
rms
Operating Six consecutively executed shock pulses in the positive and negative x, y,
and z axes of 6 G for up to 11 ms.
Storage Six consecutively executed shock pulses in the positive and negative x, y,
and z axes (one pulse on each side of the system) of 71 G for up to 2 ms.
Table 26. Maximum altitude specications
Maximum altitude Specications
Operating
Storage 12,000 m (39,370 ft)
3048 m (10,000 ft)
Technical specications 29
Table 27. Operating temperature de-rating specications
Operating temperature de-rating Specications
Up to 35°C (95°F) Maximum temperature is reduced by 1°C/300 m (1°F/547 ft) above 950 m
(3,117 ft).
35°C to 40°C (95°F to 104°F) Maximum temperature is reduced by 1°C/175 m (1°F/319 ft) above 950 m
(3,117 ft).
40°C to 45°C (104°F to 113°F) Maximum temperature is reduced by 1°C/125 m (1°F/228 ft) above 950 m
(3,117 ft).
Particulate and gaseous contamination specications
The following table denes the limitations that help avoid any equipment damage or failure from particulates and gaseous contamination. If
the levels of particulates or gaseous pollution exceed the specied limitations and result in equipment damage or failure, you may need to
rectify the environmental conditions. Re-mediation of environmental conditions is the responsibility of the customer.
Table 28. Particulate contamination specications
Particulate contamination Specications
Air ltration Data center air ltration as dened by ISO Class 8 per ISO 14644-1 with a
95% upper condence limit.
NOTE: This condition applies to data center environments only. Air
ltration requirements do not apply to IT equipment designed to be
used outside a data center, in environments such as an oce or
factory oor.
NOTE: Air entering the data center must have MERV11 or MERV13
ltration.
Conductive dust Air must be free of conductive dust, zinc whiskers, or other conductive
particles.
NOTE: This condition applies to data center and non-data center
environments.
Corrosive dust
Table 29. Gaseous contamination specications
Gaseous contamination Specications
Copper coupon corrosion rate <300 Å/month per Class G1 as dened by ANSI/ISA71.04-1985.
Silver coupon corrosion rate <200 Å/month as dened by AHSRAE TC9.9.
NOTE: Maximum corrosive contaminant levels measured at ≤50% relative humidity.
• Air must be free of corrosive dust.
• Residual dust present in the air must have a deliquescent point less than
60% relative humidity.
NOTE: This condition applies to data center and non-data center
environments.
30 Technical specications
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