* The entire materials provided herein are for reference only. GIGABYTE reserves the right to modify or revise the content at anytime without prior notice.
* Advertised performance is based on maximum theoretical interface values from respective Chipset vendors or organization who defined the interface specification. Actual performance may vary by system configuration.
* All trademarks and logos are the properties of their respective holders.
* Due to standard PC architecture, a certain amount of memory is reserved for system usage and therefore the actual memory size is less than the stated amount.

SPECIFICATIONS

Dimensions (WxHxD, mm)
2U
438 x 87.5 x 730
Motherboard
MR91-FS0
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
Dual processor, TDP up to 165W*

* If only 1 CPU is installed, some PCIe or memory functions might be unavailable
* To support a CPU TDP of up to 205W, power supply units must be upgraded to 1600W
Socket
2 x LGA 3647
Socket P
Chipset
Intel® C621 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: 2933/2666/2400/2133 MHz

Maximum verified DCPMM configuration:

* 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
Rear side:
2 x 1Gb/s LAN ports (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, DDR4 SDRAM
Storage
Front side:
12 x 3.5"/2.5" SATA/SAS hot-swappable bays

Rear side:
2 x 2.5" SATA/SAS hot-swappable bays

12 x SATA ports by default setting

SAS card is required for SAS devices support
SATA
2 x 7-pin SATA III 6Gb/s with SATA DOM supported
By using pin_8 or external cable for power function
SAS
Supported via add-on SAS Card
RAID
Intel® SATA RAID 0/1/10/5
Expansion Slots
Riser Card CRS2131:
- 1 x PCIe x16 (Gen3 x16 or x8) FHFL slot, from CPU_0, for GPUs
- 1 x PCIe x8 (Gen3 x0 or x8) FHFL slot, from CPU_0
- 1 x PCIe x8 (Gen3 x8) FHHL slot, CPU_0

Riser Card CRS2132:
- 1 x PCIe x16 (Gen3 x16 or x8) FHFL slot, from CPU_1, for GPUs
- 1 x PCIe x8 (Gen3 x0 or x8) FHFL slot, from CPU_1
- 1 x PCIe x8 (Gen3 x8) FHHL slot, from CPU_0

Riser Card CRS2124:
- 1 x PCIe x8 (Gen3 x0 or x8) low-profile slot, from CPU_1
- 1 x PCIe x16 (Gen3 x16 or x8) low-profile slot, from CPU_1

1 x OCP mezzanine slot with PCIe Gen3 x16 bandwidth (Type1, P1, P2, P3, P4, K2, K3), from CPU_0

1 x OCP mezzanine slot with PCIe Gen3 x16 bandwidth (Type1, P1, P2, P3, P4, K2, K3), from CPU_1
Internal I/O
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 Backplane board header
1 x IPMB connector
1 x Clear CMOS jumper
1 x BIOS recovery jumper
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)
2 x RJ45
1 x MLAN
1 x ID button with LED
Backplane I/O
Speed and bandwidth:
Front side - CBP20C3: SATAIII 6Gb/s or SAS 12Gb/s
Rear side - CBP2020: SATAIII 6Gb/s or SAS 12Gb/s
TPM
1 x TPM header with LPC interface
Optional TPM2.0 kit: CTM000
Power Supply
2 x 1200W 80 PLUS Platinum redundant power supplies*

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

* Redundant function would be disabled if 2 x GPU cards are installed in system
* To support redundant function, change power supply to 2000W (PN: 25EP0-22000A-L0S) when CPU TDP >165W
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 profiles
  • Voltages, fans and temperatures monitoring
  • System event log
  • Events management (platform events, trap settings, email settings)
  • Serial Over LAN
  • vKVM & vMedia (HTML5)
OS Compatibility
For Skylake processors:

Windows Server 2012 R2 with Update
Windows Server 2016
Windows Server 2019

Red Hat Enterprise Linux 6.9 (x64) or later
Red Hat Enterprise Linux 7.3 (x64) or later
Red Hat Enterprise Linux 8.0 (x64) or later
Red Hat Enterprise Linux 9.0 (x64) or later

SUSE Linux Enterprise Server 11 SP4 (x64) or later
SUSE Linux Enterprise Server 12 SP2 (x64) or later
SUSE Linux Enterprise Server 15 (x64) or later

Ubuntu 16.04.1 LTS (x64) or later
Ubuntu 18.04 LTS (x64) or later
Ubuntu 20.04 LTS (x64) or later

VMware ESXi 6.0 Update 3 or later
VMware ESXi 6.5 or later
VMware ESXi 6.7 or later
VMware ESXi 7.0 or later
VMware ESXi 8.0 or later

Citrix Xenserver 7.1.0 CU2 or later
Citrix Xenserver 7.4.0 or later
Citrix Hypervisor 8.0.0 or later

For Cascade Lake processors:

Windows Server 2012 R2 with Update
Windows Server 2016
Windows Server 2019

Red Hat Enterprise Linux 7.6 (x64) or later
Red Hat Enterprise Linux 8.0 (x64) or later
Red Hat Enterprise Linux 9.0 (x64) or later

SUSE Linux Enterprise Server 12 SP3 (x64) or later
SUSE Linux Enterprise Server 15 (x64) or later

Ubuntu 18.04 LTS (x64) or later
Ubuntu 20.04 LTS (x64) or later
Ubuntu 22.04 LTS (x64) or later

VMware ESXi 6.0 Update 3 or later
VMware ESXi 6.5 Update 2 or later
VMware ESXi 6.7 Update 1 or later
VMware ESXi 7.0 or later
VMware ESXi 8.0 or later

Citrix Xenserver 7.1.0 CU2 or later
Citrix Xenserver 7.5.0 or later
Citrix Hypervisor 8.0.0 or later
Weight
20 kg
System Fans
4 x 80x80x38mm (16,300rpm), 2-ball
Operating Properties
Operating temperature: 10°C to 35°C
Operating humidity: 8-80% (non-condensing)
Non-operating temperature: -40°C to 60°C
Non-operating humidity: 20%-95% (non-condensing)

NOTE: Please contact Technical Support for more information about optimized GPU system operating temperature
Packaging Dimensions
982 x 588 x 268 mm
Packaging Content
1 x R281-3C2
2 x CPU heatsinks
1 x Rail kit
2 x Non-fabric CPU carriers
Part Numbers
- Barebone package: 6NR2813C2MR-00-3*
- Motherboard: 9MR91FS0NR-00
- Rail kit: 25HB2-3A0202-K0R
- CPU heatsink: 25ST1-253100-F2R
- Non-fabric CPU carrier: 12KRC-0F3647-50R
- Front panel board - CFP2001: 9CFP2001NR-00
- Backplane board - CBP20C3: 9CBP20C3NR-00
- Backplane board - CBP2020: 9CBP2020NR-00
- Fan module: 25ST2-883829-D0R
- Riser card - CRS2131: 9CRS2131NR-00
- Riser card - CRS2132: 9CRS2132NR-00
- Riser card - CRS2124: 9CRS2124NR-00
- 1200W power supply: 25EP0-212002-F3S
- 1600W power supply: 25EP0-216008-L0S (optional)
- RJ45 type COM cable: 25CR0-200400-Y4R (optional)
* The entire materials provided herein are for reference only. GIGABYTE reserves the right to modify or revise the content at anytime without prior notice.
* Advertised performance is based on maximum theoretical interface values from respective Chipset vendors or organization who defined the interface specification. Actual performance may vary by system configuration.
* All trademarks and logos are the properties of their respective holders.
* Due to standard PC architecture, a certain amount of memory is reserved for system usage and therefore the actual memory size is less than the stated amount.

SUPPORT

  • All
  • All
  • Windows Server 2019
  • Windows Server 2016 64bit
  • Windows Server 2012 R2 64bit
  • Linux
LAN
LAN
Version
Size
Date
SATA RAID/AHCI
SATA RAID/AHCI
Version
Size
Date
Intel® SATA Preinstall driver
(For AHCI / RAID Mode)
Note: Windows setup to read from USB devices
Version : 6.0.0.1357
6.54 MB
Apr 19, 2019
OS: Windows Server 2012 R2 64bit,Windows Server 2016 64bit,Windows Server 2019
Intel® Rapid Storage Technology enterprise (Intel® RSTe)
Version : 6.0.0.1357
265.09 MB
Apr 21, 2019
OS: Windows Server 2012 R2 64bit,Windows Server 2016 64bit,Windows Server 2019
Warning:
Because BIOS flashing is potentially risky, if you do not encounter problems using the current version of BIOS, it is recommended that you not flash the BIOS. To flash the BIOS, do it with caution. Inadequate BIOS flashing may result in system malfunction.

What is a BETA?
BETA describes a new version that is reliable yet may not include all the features of the final product. During this phase we are previewing new features and gathering customer input to insure our product provides the best experience possible.

  • All
  • All
  • Windows Server 2022
  • Windows Server 2019
  • Windows Server 2016 R2 64bit
  • Windows Server 2016 64bit
  • Windows Server 2012 R2 64bit
  • Windows Server 2012 64bit
  • Windows 10 64bit
  • VMware
  • Ubuntu
  • Linux CentOS
  • Linux
Utility
Description
Version
Size
Date
GSM CLI
Version : 2.1.64
111.38 MB
Sep 05, 2023
OS: Windows Server 2012 64bit,Windows Server 2012 R2 64bit,Linux CentOS,Windows 10 64bit,Ubuntu,Windows Server 2016 R2 64bit,Windows Server 2019,Windows Server 2022
Manual
Description
Version
Size
Date

RESOURCES

Security & Technical Advisory
Back to R281-3C2