Gigabyte R281-Z94 User manual

R281-Z94
MZ91-FS0 Motherboard for AMD®EPYCTM Series Processors Family
User Manual
Rev. 1.0

Copyright
© 2020 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 specifications 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related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 at:
http://reseller.b2b.gigabyte.com
For further information & technical assistance, please contact your GIGABYTE sales representative.
You may also message GIGABYTE server directly by email, Facebook or twitter.
Email: server[email protected]
Facebook: https://www.facebook.com/gigabyteserver
Twitter: https://twitter.com/GIGABYTEServer

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 disconnect the
cables attached to the system before servicing it. Otherwise, personal injury or equipment dam-
age 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 workstation. 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
sensitive 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 ngertips
or with a pair of ne needle nosed pliers. If the jumpers do not have such a tab, take care when
using 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................................................................................... 16
Chapter 2 System Appearance.....................................................................................17
2-1 Front View...................................................................................................... 17
2-2 Rear View....................................................................................................... 17
2-3 Front Panel LED and Buttons ........................................................................ 18
2-4 Rear System LAN LEDs................................................................................. 20
2-5 Hard Disk Drive LEDs .................................................................................... 21
2-6 Power Supply Unit LED.................................................................................. 22
Chapter 3 System Hardware Installation ......................................................................23
3-1 Removing and Installing the Chassis Cover .................................................. 24
3-2 Removing and Installing the Fan Duct ........................................................... 25
3-3 Removing and Installing the CPU and Heat Sink........................................... 26
3-4 Removing and Installing Memory................................................................... 28
3-4-1 Eight-Channel Memory Conguration ....................................................................28
3-4-2 Removing and Installing a Memory Module ...........................................................29
3-4-3 DIMM Population Table ..........................................................................................30
3-5 Removing and Installing the PCI Expansion Card ......................................... 32
3-6 Removing and Installing the Hard Disk Drive................................................. 34
3-7 Installing and Removing an M.2 Solid State Drive......................................... 35
3-8 Replacing the Fan Assembly.......................................................................... 36
3-9 Removing and Installing the Power Supply.................................................... 37
3-10 Cable Routing ................................................................................................ 38
Chapter 4 Motherboard Components ...........................................................................41
4-1 Motherboard Components ............................................................................. 41
4-2 Jumper Settings ............................................................................................. 43
4-3 Thermal Mapping Table.................................................................................. 44
Chapter 5 BIOS Setup ..................................................................................................45
5-1 The Main Menu .............................................................................................. 47
5-2 Advanced Menu ............................................................................................. 49
5-2-1 iSCSI Conguration ................................................................................................50
5-2-2 QLogic 577xx/578xx 10 Gb Ethernet BCM57810...................................................51

- 8 -
5-2-3 VLAN Conguration................................................................................................64
5-2-4 CPU Conguration..................................................................................................66
5-2-5 SATA Conguration.................................................................................................68
5-2-6 USB Conguration..................................................................................................69
5-2-7 AST2500 Super IO Conguration...........................................................................71
5-2-8 Serial Port Console Redirection .............................................................................74
5-2-9 PCI Subsystem Settings.........................................................................................79
5-2-10 Network Stack ........................................................................................................81
5-2-11 CSM Conguration .................................................................................................82
5-2-12 Trusted Computing .................................................................................................84
5-2-13 NVMe Conguration ...............................................................................................85
5-3 AMD CBS Menu............................................................................................. 86
5-3-1 Zen Common Options ............................................................................................87
5-3-2 DF Common Options..............................................................................................90
5-3-3 UMC Common Options ..........................................................................................91
5-3-4 NBIO Common Options..........................................................................................94
5-3-5 FCH Common Options ...........................................................................................95
5-4 Chipset Setup Menu....................................................................................... 97
5-4-1 North Bridge ...........................................................................................................98
5-4-2 Error Management................................................................................................101
5-5 Server Management Menu........................................................................... 102
5-5-1 System Event Log ................................................................................................104
5-5-2 View FRU Information ..........................................................................................105
5-5-3 BMC Network Conguration .................................................................................106
5-5-4 IPv6 BMC Network Conguration.........................................................................108
5-6 Security Menu .............................................................................................. 110
5-6-1 Secure Boot.......................................................................................................... 111
5-7 Boot Menu.................................................................................................... 115
5-7-1 UEFI NETWORK Drive BBS Priorities ................................................................117
5-7-2 UEFI Application Boot Priorities ................................................................. 118
5-8 Save & Exit Menu......................................................................................... 119
5-9 ABL POST Codes ........................................................................................ 120
5-9-1 StartProcessorTestPoints .....................................................................................120
5-9-2 Memory test points ...............................................................................................120
5-9-3 PMU Test Points ...................................................................................................120
5-9-4 Original Post Code ...............................................................................................121
5-9-5 CPU test points.....................................................................................................122
5-9-6 Topology test points..............................................................................................122
5-9-7 Extended memory test point.................................................................................122
5-9-8 Gnb Earlier init......................................................................................................123
5-9-9 PMU test points ....................................................................................................126

- 9 -
5-9-10 ABL0 test points ...................................................................................................126
5-9-11 ABL5 test points ...................................................................................................126
5-10 Agesa POST Codes..................................................................................... 130
5-10-1 Universal Post Code.............................................................................................130
5-10-2 [0xA1XX] For CZ only memory Postcodes...........................................................130
5-10-3 S3 Interface Post Code ........................................................................................133
5-10-4 PMU Post Code....................................................................................................133
5-10-5 [0xA5XX] assigned for AGESA PSP Module ........................................................133
5-10-6 [0xA9XX, 0xAAXX] assigned for AGESA NBIO Module .......................................136
5-10-7 [0xACXX] assigned for AGESA CCX Module .......................................................138
5-10-8 [0xADXX] assigned for AGESA DF Module..........................................................139
5-10-9 [0xAFXX] assigned for AGESA FCH Module........................................................139
5-11 BIOS POST Beep code (AMI standard)....................................................... 141
5-11-1 PEI Beep Codes...................................................................................................141
5-11-2 DXE Beep Codes .................................................................................................141

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Hardware Installation - 11 -
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 user manual 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

- 12 - Hardware Installation
1-2 Product Specications
CPU AMD EPYC™ 7001 series processor family
Dual processors, 14nm, Socket SP3
Up to 32-core, 64 threads per processor
TDP up to 200W

NOTE: If only 1 CPU is installed, some PCIe or memory functions might be
unavailable
Chipset System on Chip
Memory 32 x DIMM slots
DDR4 memory supported only
8-Channel memory architecture
RDIMM modules up to 64GB supported
LRDIMM modules up to 128GB supported
Memory speed: 2666(1DPC)/2400/2133* MHz
Note:
Memory speed run at 2133MHz when 1R/2R memory modules are fully populated
LAN 2 x 1GbE LAN ports (1 x Intel® I350-AM2)
1 x 10/100/1000 management LAN
Video Integrated in Aspeed® AST2500
2D Video Graphic Adapter with PCIe bus interface
1920x1200@60Hz 32bpp
RAID Depends on RAID card
Storage 12 x 3.5" / 2.5" SATA/SAS hot-swappable HDD/SSD bays
Default conguration supports:
4 x SATA drives available, 8 x SAS/ SATA drives via optional SAS card
SAS card is required to enable the drive bays
Recommended SAS card:
CRA4448
CRA3338

Hardware Installation - 13 -
Expansion Slot Riser Card CRS2133:
1 x PCIe x16 slot (Gen3 x16 or x8), Full height full-length
1 x PCIe x8 slots (Gen3 x0 or x8), Full height full-length
1 x PCIe x8 slots (Gen3 x8), Full height half-length
Riser Card CRS2134:
1 x PCIe x16 slot (Gen3 x16 or x8), Full height full-length
1 x PCIe x8 slots (Gen3 x0 or x8), Full height full-length
1 x PCIe x8 slots (Gen3 x8), Full height half-length
Riser Card CRS2123:
1 x PCIe x8 slots (Gen3 x0 or x8), Full height full-length
1 x PCIe x16 slot (Gen3 x16 or x8), Full height full-length
2 x OCP mezzanine slots
PCIe Gen3 x16
Type1, P1, P2, P3, P4, K2, K3
1 x M.2 slot:
M-key
PCIe Gen3 x4
Supports NGFF-2242/2260/2280 cards
(NOTE)
- System is validated for population with a uniform GPU model
-Support is not provided for mixed GPU populations
- For the latest QVL, please contact your GIGABYTE representative
Internal I/O 6 x SlimSAS connectors
1 x M.2 slot
2 x CPU fan headers
1 x USB 3.0 header
1 x TPM header
7 x PCIe expansion slots
2 x OCP mezzanine slots
2 x Power supply connectors
1 x Front panel header
1 x Back plane board header
1 x IPMB connector
1 x Clear CMOS jumper
1 x BIOS recovery jumper

- 14 - Hardware Installation
Front 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 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 9CBP20C4NR-00: 12 x SATA/SAS ports
Bandwidth: SATAIII 6Gb/s or SAS 12Gb/s per port
TPM 1 x TPM header with LPC interface
Optional TPM2.0 kit: CTM000
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)

Hardware Installation - 15 -
Power Supply 2 x 2000W redundant PSUs
80 PLUS Platinum
AC Input:
100-127V~/ 12.5A, 50-60Hz
200-240V~/ 12.5A, 50-60Hz
DC Output:
Max 1008W/ 100-127V~
+12V/ 84A
+12Vsb/ 2A
- Max 2004W/ 200-240V
+12V/ 167A
+12Vsb/ 2A
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 87mm (H) x 710mm (D)
* We reserves the right to make any changes to the product specications and product-related information without
prior notice.

- 16 - Hardware Installation
1-3 System Block Diagram
8 Channels
DDR4
M.2 M Key
USB2.0 x2
LPC
PCIe3.0 x4
Switch
PCIe3.0 x1
i350
ASM1042
Rear 2 x USB 3.0
PCIe3.0 x2MDI
NCSI
PCIe3.0 x1
ASPEED
AST2500
1 x MLAN
2 x 1G LAN
RGMII MAC BMC
VGA
COM
PCIe3.0 x8
USB3.0 X2
PCIe3.0 x16
PCIe3.0
x
16
PCIe3.0
x
8
PCIe3.0
x
8
PCIe3.0
x
16
CRS2133
Switch
PCIe x16
PCIe x8
PCIe x8
Switch
PCIe x16
PCIe x8
PCIe x8
CRS2134
CRS2123
Switch
PCIe x16
PCIe x8
8 Channels
DDR4
2666/2400/2133 MHz 2666/2400/2133 MHz
10.6GT/s; 11.7GT/s; 12.8GT/s
4x16 GOP
Internal USB 3.0
RTL8211
PHY
8 x SATAIII
8 x SATAIII
8 x SATAIII
PCIe3.0 x16
6 x SlimLine
TPM
PCIe3.0 x16
OCP1 mezz.
OCP2 mezz.
12-bay 3.5"/2.5" SATA
“Zen” Core
Sockets SP3
CPU_1
“Zen” Core
Sockets SP3
CPU_0

- 17 - System Appearance
Chapter 2 System Appearance
2-1 Front View
No. Description
1. Front Panel LEDs and buttons
2. HDD Bays
3. Front USB 3.0 ports
• Refer to Chapter 2-3 Front Panel LED and Buttons for a detailed description of the function
of the LEDs.
2-2 Rear View
No. Description
1. VGA port
2. USB 3.0 ports
3. LAN ports
4. COM port (RJ45 type)
5. 10/100/1000 Server management LAN port
• Refer to Chapter 2-4 Rear System LAN LEDs for a detailed description of the function of
the LEDs.
Primary
PSU
Secondary
PSU
Rear HDD #0
Rear HDD #1
1 2 4 53
Primary
PSU
Secondary
PSU
Rear HDD #0
Rear HDD #1
1 2 4 53
3
HDD #0
HDD #1
HDD #2
HDD #3
HDD #4
HDD #5
HDD #6
HDD #7
HDD #8
HDD #9
HDD #10
HDD #11
1 2

System Appearance - 18 -
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 this button to reset the system.
2. NMI button -- --
Press this button for the server to generate a NMI to the
processor. If multiple-bit ECC errors occur, the server will
effectively be halted.
3. Power button
with LED
Green On Indicates the system is powered on.
Green Blink System is in ACPI S1 state (sleep mode).
N/A Off • System is not powered on or inACPI S5 state (power off)
• System is in ACPI S4 state (hibernate mode)
4. ID Button
with LED
Blue On Indicates the system identication is active.
N/A Off Indicates the system identication is disabled.
5. HDD Status
LED
Green On Indicates locating the HDD.
Blink Indicates accessing the HDD.
Amber On Indicates HDD error.
Green/
Amber Blink Indicates HDD rebuilding.
N/A Off Indicates no HDD access or no HDD error.
6. System
Status LED
Green On Indicates system is operating normally.
Amber
On
Indicates a critical condition, may include:
-System fan failure
-System temperature
Blink
Indicates non-critical condition, may include:
-Redundant power module failure
-Temperature and voltage issue
N/A Off
Indicates system is not ready, may include:
-POST error
-NMI error
-Processor or terminator is missing

- 19 - System Appearance
7. LAN1 Active/
Link LED
Green On Indicates a link between the system and the network or
no access.
Green Blink Indicates data trasmission or receiving is occuring.
N/A Off Indicates no data transmission or receiving is occuring.
8. LAN2 Active/
Link LED
Green On Indicates a link between the system and the network or
no access.
Green Blink Indicates data trasmission or receiving is occuring.
N/A Off Indicates no data transmission or receiving is occuring.

System Appearance - 20 -
2-4 Rear System LAN LEDs
No. Name Color Status Description
1. 1GbE
Speed LED
Yellow On 1 Gbps data rate
Green On 100 Mbps data rate
N/A Off 10 Mbps data rate
2.
1GbE
Link/
Activity
LED
Green
On Link between system and
network or no access
Blink Data transmission or receiving is occurring
N/A Off No data transmission or
receiving is occurring
1 2 1 221