GIGA-BYTE TECHNOLOGY R281-3C0 User manual

R281-3C0
R281-3C1
R281-3C2
Dual LGA3647 sockets motherboard for Intel®Scalable Family Processors
User Manual
Rev. 1.1

Copyright
© 2019 GIGA-BYTE TECHNOLOGY CO., LTD. All rights reserved.
The trademarks mentioned in this manual are legally registered to their respective owners.
Disclaimer
Information in this manual is protected by copyright laws and is the property of GIGABYTE.
Changes to the specications and features in this manual may be made by GIGABYTE without
prior notice. No part of this manual may be reproduced, copied, translated, transmitted, or
published in any form or by any means without GIGABYTE's prior written permission.
Documentation Classications
In order to assist in the use of this product, GIGABYTE provides the following types of documentation:
 User Manual: detailed information & steps about the installation, conguration and use of this
product (e.g. motherboard, server barebones), covering hardware and BIOS.

User Guide: detailed information about the installation & use of an add-on hardware or
software component (e.g. BMC rmware, rail-kit) compatible with this product.
Quick Installation Guide: a short guide with visual diagrams that you can reference easily for
installation purposes of this product (e.g. motherboard, server barebones).
Please see the support section of the online product page to check the current availability of these
documents.
For More Information
For related product specications, the latest rmware and software, and other information please visit our website at
http://www.gigabyte.com
For GIGABYTE distributors and resellers, additional sales & marketing materials are available from our reseller
portal: http://reseller.b2b.gigabyte.com
For further technical assistance, please contact your GIGABYTE representative or visit
https://esupport.gigabyte.com/ to create a new support ticket
For any general sales or marketing enquiries, you may also message GIGABYTE server directly by email:
server[email protected]

Conventions
The following conventions are used in this user's guide:
NOTE!
Gives bits and pieces of additional
information related to the current topic.
CAUTION!
Gives precautionary measures to
avoid possible hardware or software problems.
WARNING!
Alerts you to any damage that might
result from doing or not doing specic actions.

Server Warnings and Cautions
Before installing a server, be sure that you understand the following warnings and cautions.
WARNING!
To reduce the risk of electric shock or damage to the equipment:
• Do not disable the power cord grounding plug. The grounding plug is an important safety
feature.
• Plug the power cord into a grounded (earthed) electrical outlet that is easily accessible at all
times.
• Unplug the power cord from the power supply to disconnect power to the equipment.
• Do not route the power cord where it can be walked on or pinched by items placed against it.
Pay particular attention to the plug, electrical outlet, and the point where the cord extends from
the server.
WARNING!
To reduce the risk of personal injury from hot surfaces, allow the drives and the internal
system components to cool before touching them.
WARNING!
This server is equipped with high speed fans. Keep away from hazardous moving fan
blades during servicing.
CAUTION!
• Do not operate the server for long periods with the access panel open or removed. Operat-
ing the server in this manner results in improper airow and improper cooling that can lead to
thermal damage.
• Danger of explosion if battery is incorrectly replaced.
• Replace only with the same or equivalent type recommended by the manufacturer.
• Dispose of used batteries according to the manufacturer’s instructions.

Electrostatic Discharge (ESD)
CAUTION!
ESD CAN DAMAGE DRIVES, BOARDS, AND OTHER PARTS. WE RECOMMEND THAT YOU
PERFORM ALL PROCEDURES AT AN ESD WORKSTATION. IF ONE IS NOT AVAILABLE,
PROVIDE SOME ESD PROTECTION BY WEARING AN ANTI-STATIC WRIST STRAP AT-
TACHED TO CHASSIS GROUND -- ANY UNPAINTED METAL SURFACE -- ON YOUR SERVER
WHEN HANDLING PARTS.
Always handle boards carefully. They can be extremely sensitive to ESD. Hold boards only by
their edges without any component and pin touching. After removing a board from its protective
wrapper or from the system, place the board component side up on a grounded, static free sur-
face. Use a conductive foam pad if available but not the board wrapper. Do not slide board over
any surface.
System power on/off: To remove power from system, you must remove the system from rack.
Make sure the system is removed from the rack before opening the chassis, adding, or removing
any non hot-plug components.
Hazardous conditions, devices and cables: Hazardous electrical conditions may be present
on power, telephone, and communication cables. Turn off the system and discon-nect the cables
attached to the system before servicing it. Otherwise, personal injury or equipment damage can
result.
Electrostatic discharge (ESD) and ESD protection: ESD can damage drives, boards, and
other parts. We recommend that you perform all procedures in this chapter only at an ESD work-
station. If one is not available, provide some ESD protection by wearing an antistatic wrist strap
attached to chassis ground (any unpainted metal surface on the server) when handling parts.
ESD and handling boards: Always handle boards carefully. They can be extremely sensi-tive to
electrostatic discharge (ESD). Hold boards only by their edges. After removing a board from its
protective wrapper or from the system, place the board component side up on a grounded, static
free surface. Use a conductive foam pad if available but not the board wrapper. Do not slide
board over any surface.
Installing or removing jumpers: A jumper is a small plastic encased conductor that slips over
two jumper pins. Some jumpers have a small tab on top that can be gripped with n-gertips or
with a pair of ne needle nosed pliers. If the jumpers do not have such a tab, take care when us-
ing needle nosed pliers to remove or install a jumper; grip the narrow sides of the jumper with the

pliers, never the wide sides. Gripping the wide sides can dam-age the contacts inside the jumper,
causing intermittent problems with the function con-trolled by that jumper. Take care to grip with,
but not squeeze, the pliers or other tool used to remove a jumper, or the pins on the board may
bend or break.
CAUTION!
Risk of explosion if battery is replaced incorrectly or with an incorrect type. Replace the battery
only with the same or equivalent type recommended by the manufacturer. Dispose of used bat-
teries according to the manufacturer’s instructions.

- 7 -
Table of Contents
Chapter 1 Hardware Installation ................................................................................... 11
1-1 Installation Precautions.................................................................................. 11
1-2 Product Specications.................................................................................... 12
1-3 System Block Diagram................................................................................... 17
Chapter 2 System Appearance.....................................................................................18
2-1 Front View...................................................................................................... 18
2-2 Rear View....................................................................................................... 18
2-3 Front Panel LED and Buttons ........................................................................ 19
2-4 Rear System LAN LEDs................................................................................. 21
2-5 Hard Disk Drive LEDs .................................................................................... 22
Chapter 3 System Hardware Installation ......................................................................23
3-1 Removing Chassis Cover............................................................................... 24
3-2 Removing and Installing the Fan Duct ........................................................... 25
3-3 Installing the CPU and Heat Sink................................................................... 26
3-4 Installing the Memory..................................................................................... 28
3-4-1 Six Channel Memory Conguration........................................................................28
3-4-2 Installing a Memory ...............................................................................................29
3-4-3 DIMM Population Table ..........................................................................................29
3-4-4 Intel Optane DCPMM DIMM Population Rule ........................................................30
3-5 Installing the PCI Expansion Card ................................................................. 31
3-6 Installing the Hard Disk Drive......................................................................... 32
3-7 Replacing the FAN Assemblly........................................................................ 33
3-8 Replacing the Power Supply.......................................................................... 34
3-9 Cable Routing ................................................................................................ 35
Chapter 4 Motherboard Components ...........................................................................36
4-1 Motherboard Components ............................................................................. 36
4-2 Jumper Setting .............................................................................................. 38
Chapter 5 BIOS Setup ..................................................................................................39
5-1 The Main Menu .............................................................................................. 41
5-2 Advanced Menu ............................................................................................. 44
5-2-1 iSCSIConguration..............................................................................................45
5-2-2 Intel(R) Virtual RAID on CPU ...............................................................................46
5-2-3 Intel(R) Ethernet Connection X722 .....................................................................47

- 8 -
5-2-3-1 NIC Conguration...................................................................................................50
5-2-4 Trusted Computing...............................................................................................51
5-2-5 Serial Port Console Redirection..........................................................................52
5-2-5-1 COM1/COM2 Serial Over LAN/Legacy/Serial Port for Out-of-Band EMS ...........
Console Redirection Settings ...........................................................................................53
5-2-6 SIOConguration.................................................................................................56
5-2-7 PCI Subsystem Settings ......................................................................................59
5-2-8 Network Stack.......................................................................................................60
5-2-9 CSMConguration...............................................................................................61
5-2-10 PostReportConguration...................................................................................63
5-2-11 NVMeConguration .............................................................................................64
5-2-12 USBConguration ...............................................................................................65
5-2-13 ChipsetConguration..........................................................................................66
5-3 Chipset Setup Menu....................................................................................... 67
5-3-1 ProcessorConguration .....................................................................................68
5-3-1-1 Pre-SocketConguration ....................................................................................70
5-3-2 CommonRefCodeConguration........................................................................72
5-3-3 UPIConguration.................................................................................................73
5-3-4 MemoryConguration .........................................................................................75
5-3-4-1 Memory Topology.................................................................................................77
5-3-4-2 MemoryRASConguration.................................................................................78
5-3-5 IIOConguration ..................................................................................................79
5-3-5-1 Intel® VT for Directed I/O (VT-d) .........................................................................80
5-3-5-2 Inter® VMD Technology ......................................................................................81
5-3-6 AdvancedPowerManagementConguration...................................................82
5-3-6-1 CPU P State Control.............................................................................................83
5-3-6-2 Hardware PM State Control .................................................................................84
5-3-6-3 CPU C State Control.............................................................................................85
5-3-6-4 Package C State Control......................................................................................86
5-3-6-5 CPU-Advanced PM Tuning...................................................................................87
5-3-7 PCHConguration ..............................................................................................89
5-3-7-1 PCHSATAConguration .....................................................................................90
1-3-7-2 PCH sSATA Conguration ......................................................................................92
5-3-8 MiscellaneousConguration ..............................................................................94
5-3-9 ServerMEConguration .....................................................................................95
5-3-10 Runtime Error Logging ........................................................................................96
5-3-10-1Whea Settings.......................................................................................................97
5-3-10-2Memory Error Enabling........................................................................................98
5-3-10-3PCIe Error Enabling..............................................................................................99
5-4 Server Management Menu........................................................................... 100
5-4-1 System Event Log ..............................................................................................102
5-4-2 View FRU Information ........................................................................................103

- 9 -
5-4-3 BMCNetworkConguration..............................................................................104
5-4-4 IPv6BMCNetworkConguration .....................................................................105
5-5 Security Menu .............................................................................................. 106
5-5-1 Secure Boot .......................................................................................................107
5-5-1-1 Key Management ..............................................................................................108
5-6 Boot Menu.................................................................................................... 110
5-6-1 UEFI NETWORK Drive BBS Priorities ..............................................................112
5-6-2 UEFI Application Boot Priorities ............................................................. 113
5-7 Save & Exit Menu......................................................................................... 114
5-8 BIOS POST Codes ...................................................................................... 116
5-9 BIOS POST Beep code................................................................................ 120
5-9-1 PEI Beep Codes..................................................................................................120
5-9-2 DEX Beep Codes ................................................................................................120
5-10 BIOS Recovery Instruction........................................................................... 121

- 10 -
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- 11 - Hardware Installation
1-1 Installation Precautions
The motherboard/system contain numerous delicate electronic circuits and components which
can become damaged as a result of electrostatic discharge (ESD). Prior to installation, carefully
read the service guide and follow these procedures:
• Prior to installation, do not remove or break motherboard S/N (Serial Number) sticker or
warranty sticker provided by your dealer. These stickers are required for warranty validation.
• Always remove the AC power by unplugging the power cord from the power outlet before
installing or removing the motherboard or other hardware components.
• When connecting hardware components to the internal connectors on the motherboard,
make sure they are connected tightly and securely.
• When handling the motherboard, avoid touching any metal leads or connectors.
• It is best to wear an electrostatic discharge (ESD) wrist strap when handling electronic
components such as a motherboard, CPU or memory. If you do not have an ESD wrist
strap, keep your hands dry and rst touch a metal object to eliminate static electricity.
• Prior to installing the motherboard, please have it on top of an antistatic pad or within an
electrostatic shielding container.
• Before unplugging the power supply cable from the motherboard, make sure the power
supply has been turned off.
• Before turning on the power, make sure the power supply voltage has been set according to
the local voltage standard.
• Before using the product, please verify that all cables and power connectors of your
hardware components are connected.
• To prevent damage to the motherboard, do not allow screws to come in contact with the
motherboard circuit or its components.
• Make sure there are no leftover screws or metal components placed on the motherboard or
within the computer casing.
• Do not place the computer system on an uneven surface
.
• Do not place the computer system in a high-temperature environment.
• Turning on the computer power during the installation process can lead to damage to
system components as well as physical harm to the user.
• If you are uncertain about any installation steps or have a problem related to the use of the
product, please consult a certied computer technician.
Chapter 1 Hardware Installation

Hardware Installation - 12 -
1-2 ProductSpecications
CPU 2nd Generation Intel® Xeon® Scalable and Intel® Xeon® Scalable Processors
Intel® Xeon® Platinum Processor, Intel® Xeon® Gold Processor, Intel® Xeon®
Silver Processor and Intel® Xeon® Bronze Processor
NOTE: If only 1 CPU is installed, some PCIe or memory functions might be
unavailable.
Socket 2 x LGA 3647
Socket P0
Mounting pitch: Narrow ILM
Chipset Intel® C621 Express Chipset
Memory 
24 x DIMM slots
DDR4 memory supported only
6-channel memory architecture
RDIMM modules up to 64GB supported
LRDIMM modules up to 128GB supported
Supports Intel® Optane™ DC Persistent Memory (DCPMM)
1.2V modules: 2933( 1DPC)/2666/2400/2133 MHz
Maximum veried DCPMM conguration:
* Ambient temperature 35°C
* 2nd Generation Intel® Xeon® Scalable processor 205W (Max.)
* DCPMM 256GB x12 pcs
DCPMM installation locations:
DIMM_P0_( A1, B1, C1)
DIMM_P0_( D1, E1, F1)
DIMM_P1_( G1, H1, I1)
DIMM_P1_( J1, K1, L1)
NOTE:
1. 2933MHz for 2nd Generation Intel® Xeon® Scalable Processors only
2. Intel® Optane™ DC Persistent Memory for 2nd Generation Intel® Xeon®
Scalable Processors only
3. The maximum number of DCPMM that can be installed is based on a
maximum operating (ambient) temperature of 35°C
4. To enquire about installing a greater number of DCPMM, please consult
with your GIGABYTE technical or sales representative
LAN 2 x 1Gb/s LAN ports (Intel® I350-AM2)
1 x 10/100/1000 management LAN

- 13 - Hardware Installation
Expansion Slot Riser Card CRS2131:
- 1 x PCIe x16 slot (Gen3 x16 or x8), Full height half-length
- 1 x PCIe x8 slots (Gen3 x0 or x8), Full height half-length
- 1 x PCIe x8 slots (Gen3 x8), Full height half-length
Riser Card CRS2132:
- 1 x PCIe x16 slot (Gen3 x16 or x8), Full height half-length
- 1 x PCIe x8 slots (Gen3 x0 or x8), Full height half-length
- 1 x PCIe x8 slots (Gen3 x8), Full height half-length
Riser Card CRS2124:
- 1 x PCIe x8 slots (Gen3 x0 or x8), Low prole half-length
- 1 x PCIe x16 slot (Gen3 x16 or x8), Low prole half-length
2 x OCP mezzanine slots
- PCIe Gen3 x16
- Type1, P1, P2, P3, P4, K2, K3
Video Integrated in Aspeed® AST2500
2D Video Graphic Adapter with PCIe bus interface
1920x1200@60Hz 32bpp, DDR4 SDRAM
Storage
(R281-3C0/
R281-3C2)
Front side: 12 x 3.5" SATA/SAS hot-swappable HDD/SSD bays
2.5" HDD/SSD supported
Rear side: 2 x 2.5" SATA/SAS hot-swappable HDD/SSD bays
Front side default conguration supports:
12 x SATA drives
or
4 x SATA drives
8 x SAS drives
SAS card is required for SAS devices support
Storage
(R281-3C1)
Front side: 12 x 3.5" SATA/SAS hot-swappable HDD/SSD bays
2.5" HDD/SSD supported
SAS card is required to enable the drive bays

Rear side: 2 x 2.5" SATA hot-swappable HDD/SSD bays connected to onboard
SATA ports#
# SATA supported only due to thermal concern
LSI SAS35x24 expander
Bandwidth: SATAIII 6Gb/s or SAS 12Gb/s per port
Default conguration supports:
2 x SATA drives
Suggested 12Gb/s SAS cards:
CRA4448
CRA4548
CRAO438
CRAO558

Hardware Installation - 14 -
SAS Supported via add-on SAS Card
Internal
Connectors
2 x Power supply connectors
4 x SlimSAS connectors
2 x SATA 7-pin connectors
2 x CPU fan headers
1 x USB 3.0 header
1 x TPM header
1 x VROC connector
1 x Front panel header
1 x HDD back plane board header
1 x PMBus connector
1 x IPMB connector
1 x Clear CMOS jumper
1 x BIOS recovery jumper
Front Panel
I/O
2 x USB 3.0
1 x Power button with LED
1 x ID button with LED
1 x Reset button
1 x NMI button
1 x System status LED
1 x HDD activity LED
2 x LAN activity LEDs
Rear Panel I/O 2 x USB 3.0
1 x VGA
1 x COM (RJ45 type)
2 x RJ45
1 x MLAN
1 x ID button with LED
Backplane I/O
(R281-3C0/3C2)
Front side_CBP20C3: 12 x SATA/SAS ports
Rear side_CBP2020: 2 x SATA/SAS ports
Bandwidth: SATAIII 6Gb/s or SAS 12Gb/s per port
(R281-3C1) Front side_CBP21C0: 12 x SATA/SAS ports
Rear side_CBP2020: 2 x SATA ports
Bandwidth: SATAIII 6Gb/s or SAS 12Gb/s per port
TPM 1 x TPM header with LPC interface
Optional TPM2.0 kit: CTM00

- 15 - Hardware Installation
Backplane I/O 2 x USB 3.0
1 x VGA
1 x COM (RJ45 type)
2 x RJ45
1 x MLAN
1 x ID button with LED
TPM 1 x TPM header with LPC interface
Optional TPM2.0 kit: CTM00
System
Management
Aspeed® AST2500 management controller
Avocent® MergePoint IPMI 2.0 web interface:
Network settings
Network security settings
Hardware information
Users control
Services settings
IPMI settings
Sessions control
LDAP settings
Power control
Fan proles
Voltages, fans and temperatures monitoring
System event log
Events management (platform events, trap settings, email settings)
Serial Over LAN
vKVM & vMedia (HTML5)
Power Supply 2 x 1200W redundant PSUs
80 PLUS Platinum

AC Input:
- 100-240V~/ 12-7A, 50-60Hz
DC Input:
- 240Vdc/ 6A

DC Output:
- Max 1000W/ 100-240V~
+12V/ 80.5A
+12Vsb/ 3A
- Max 1200W/ 200-240V~ or 240Vdc input
+12V/ 97A
+12Vsb/ 3A

Hardware Installation - 16 -
Environment
Ambient
Temperature
Relative
Humidity
Operating temperature: 10°C to 35°C
Non-operating temperature: -40°C to 60°C
Operating humidity: 8-80% (non-condensing)
Non-operating humidity: 20%-95% (non-condensing)
System
Dimension
2U
438mm (W) x 87.5mm (H) x 730mm (D)
* We reserves the right to make any changes to the product specications and product-related information without prior
notice.

- 17 - Hardware Installation
1-3 System Block Diagram
Uplink x16
KR x4
PCIe3.0 x1
LPC
6 Channels
DDR4
6 Channels
DDR4
2666/2400/2133 MHz
DMI3 x 4
UPI 10.4GT/s
2666/2400/2133 MHz
UPI 10.4GT/s
2A~2D
PCIe3.0 x 1
PCIe3.0
x 8
PCIe3.0
x 8
PCIe3.0
x 16
PCIe3.0
x 16
PCIe3.0
x
16
PCIe3.0
x
16
PCIe3.0
x
16
1 x COM ( 1x Rear)
Front 2x USB 3.0
Rear 2 x USB 3.0
1 x VGA1 x LAN
(for Management)
NCSI
2 x USB 2.0
OCP_1 mezz.
TPM
i350
PCH
Intel C621
Lewisburg
SW_RAID
For VROC
2 x SSATAIII
(SSATA DOM)
ASPEED
AST2500
10/100/1G
PHY(1ch)
MACBMC
Switch
PCIe x16
PCIe x8
PCIe x8
CRS2131
Switch
PCIe x16
PCIe x8
PCIe x8
CRS2132
Switch
PCIe x8
PCIe x16
CRS2124
OCP_2 mezz.
Skylake-SP
LGA 3647
Socket P0
CPU_0
Skylake-SP
LGA 3647
Socket P0
CPU_1
Switch
Switch
2 x 1Gb/s LAN
8 x SATAIII
3 x SlimLine SAS
2 x SSATAIII
4 x SSATAIII

Hardware Installation - 18 -
Chapter 2 System Appearance
2-1 Front View
No. Decription
1. Front Panel LEDs and buttons
2. Front USB 3.0 ports
•Please Go to Chapter 2-3 Front Panel LED and Buttons for detail description of function LEDs.
HDD #0
HDD #2
HDD #1
HDD #3
HDD #5
HDD #4
HDD #6
HDD #8
HDD #7
HDD #9
HDD #11
HDD #10
12
2-2 Rear View
No. Decription
1. VGA port
2. USB 3.0 ports
3. GbE LAN ports
4. Serial port
5. 10/100/1000 Server management LAN port
Primary
PSU
Secondary
PSU
Rear HDD #0
Rear HDD #1
1 2 4 53

- 19 - Hardware Installation
2-3 Front Panel LED and Buttons
L1 L2
1
3
5
7
2
4
6
8
No. Name Color Status Description
1. Reset Button Press the button to reset the system.
2. NMI button
Press the button server generates a NMI to the processor
if the multiple-bit ECC errors occur, which effectively halt
the server.
3. Power button
with LED
Green On System is powered on
Green Blink System is in ACPI S1 state (sleep mode)
N/A Off
• System is not powered on or in ACPI S5 state (power
off)
• System is in ACPI S4 state (hibernate mode)
4. ID Button
with LED
Blue On System identication is active.
N/A Off System identication is disabled.
5. HDD Status
LED
Green On HDD locate
Blink HDD access
Amber On HDD fault
Green/
Amber Blink HDD rebuilding
N/A Off No HDD access or no HDD fault.

Hardware Installation - 20 -
6. System
Status LED
Green
On System is operating normally.
Blink Processor disable, Memory Disabled,
POST Memory Resize
Amber
On
Critical condition, may indicates:
System fan failure
System temperature
Blink
Non-critical condition, may indicates:
Redundant power module failure
Temperature and voltage issue
Chassis intrusion
N/A Off
Non-critical condition, may indicates:
Redundant power module failure
Temperature and voltage issue
Chassis intrusion
7. LAN1 Active/
Link LED
Green On Link between system and network
or no access
Green Blink Data transmission or receiving is occurring
N/A Off No data transmission or receiving is occurring
8. LAN2 Active/
Link LED
Green On Link between system and network
or no access
Green Blink Data transmission or receiving is occurring
N/A Off No data transmission or receiving is occurring