R281-Z91

2U
438 x 87 x 710

MZ91-FS0

AMD EPYC™ 7002 Series Processors
AMD EPYC™ 7001 Series Processors
Dual processor, 7nm technology
Up to 64 cores, 128 threads per processor
cTDP up to 280W

Note: If only 1 CPU is installed, some PCIe or memory functions might be unavailable.

System on Chip

32 x DIMM slots
DDR4 memory supported only
8-Channel memory architecture
RDIMM up to 128GB supported
LRDIMM up to 128GB supported
Memory speed: Up to 3200*/2933 MT/s

Note: Follow BIOS setting and memory QVL if running 3200 MT/s with 2DPC.

Rear side:
2 x 1Gb/s LAN ports (1 x Intel^® I350-AM2)
Support NCSI function

1 x 10/100/1000 Mbps Management LAN

Integrated in Aspeed^® AST2500
- 1 x VGA port

Front side:
6 x 2.5" Gen3 NVMe hot-swappable bays
- (4 x from CPU_0, 2 x from CPU_1)
18 x 2.5" SATA/SAS hot-swappable bays

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

LSI SAS35x36 expander
Bandwidth: SATA 6Gb/s or SAS 12Gb/s per port

Default configuration supports:
6 x NVMe, 0 x SAS/SATA drives

SAS card is required to enable the drives

For SAS/SATA supported only
Depends on RAID cards

Riser Card CRS2133:
- 1 x PCIe x16 (Gen3 x16 or x8) FHHL slot, from CPU_0
- 1 x PCIe x8 (Gen3 x0 or x8) FHHL slot, from CPU_0
- 1 x PCIe x8 (Gen3 x8) FHHL slot, from CPU_0

Riser Card CRS2134:
- 1 x PCIe x16 (Gen3 x16 or x8) FHHL slot, from CPU_1
- 1 x PCIe x8 (Gen3 x0 or x8) FHHL slot, from CPU_1
- 1 x PCIe x8 (Gen3 x8) FHHL slot, from CPU_1, occupied by CNV3122 - 2 x NVMe ports

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

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

1 x OCP mezzanine slot with PCIe Gen3 x16 (Type1, P1, P2, P3, P4, K2, K3), from CPU_1

1 x M.2 slot:
- M-key
- PCIe Gen3 x4, from CPU_0
- Supports 2242/2260/2280 cards
- CPU TDP is limited to 180W if using M.2 device

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 Backplane board header
1 x IPMB connector
1 x Clear CMOS jumper
1 x BIOS recovery jumper

2 x USB 3.0
1 x Power button with LED
1 x ID button with LED
1 x NMI button
1 x Reset button
2 x LAN activity LEDs
1 x Storage activity LED
1 x System status LED

2 x USB 3.0
1 x VGA
1 x COM (RJ45)
2 x RJ45
1 x MLAN
1 x ID button with LED

Speed and bandwidth:
Front side - CBP20O5: PCIe Gen3 x4 or SATA 6Gb/s or SAS 12Gb/s
Rear side - CBP2020: SATA 6Gb/s or SAS 12Gb/s

1 x TPM header with LPC interface
- Optional TPM2.0 kit: CTM000

Dual 1200W 80 PLUS Platinum redundant power supply

AC Input:
- 100-240V~/ 12-7A, 50-60Hz

DC Input: (Only for China)
- 240Vdc/ 6A

DC Output:
- Max 1000W/ 100-240V~
+12V/ 80.5A
+12Vsb/ 3A
- Max 1200W/ 200-240V~ or 240Vdc Input
+12V/ 97A
+12Vsb/ 3A

Note: Select 1600W power supply if using 280W CPU with full loading configuration.

Aspeed^® AST2500 Baseboard Management Controller
GIGABYTE Management Console web interface

• Dashboard
• HTML5 KVM
• Sensor Monitor (Voltage, RPM, Temperature, CPU Status …etc.)
• Sensor Reading History Data
• FRU Information
• SEL Log in Linear Storage / Circular Storage Policy
• Hardware Inventory
• Fan Profile
• System Firewall
• Power Consumption
• Power Control
• LDAP / AD / RADIUS Support
• Backup & Restore Configuration
• Remote BIOS/BMC/CPLD Update
• Event Log Filter
• User Management
• Media Redirection Settings
• PAM Order Settings
• SSL Settings
• SMTP Settings

For AMD EPYC™ 7002 Series Processors

Citrix Hypervisor 8.1
Citrix Hypervisor 8.2 LTSR CU1

Red Hat Enterprise Linux 7.6 or later
Red Hat Enterprise Linux 8.0 or later
Red Hat Enterprise Linux 9.0 or later

SUSE Linux Enterprise Server 12 SP4 or later
SUSE Linux Enterprise Server 15 SP1 or later

Ubuntu 16.04.6 LTS or later
Ubuntu 18.04.3 LTS or later
Ubuntu 20.04 LTS or later

VMware ESXi 6.5 EP15 or later
VMware ESXi 6.7 Update3 or later
VMware ESXi 7.0 or later
VMware ESXi 8.0 or later

Windows Server 2016 (X2APIC/256T not supported)
Windows Server 2019

For AMD EPYC™ 7001 Series Processors

Citrix Xenserver 7.1.0 CU2 or later
Citrix Xenserver 7.5.0 or later
Citrix Hypervisor 8.0.0 or later

Red Hat Enterprise Linux 7.4 or later
Red Hat Enterprise Linux 8.0 or later
Red Hat Enterprise Linux 9.0 or later

SUSE Linux Enterprise Server 11 SP4 or later
SUSE Linux Enterprise Server 12 SP3 or later
SUSE Linux Enterprise Server 15 or later

Ubuntu 16.04 LTS or later
Ubuntu 18.04 LTS or later
Ubuntu 20.04 LTS or later

VMware ESXi 6.5 Update1 or later
VMware ESXi 6.7 or later
VMware ESXi 7.0 or later
VMware ESXi 8.0 or later

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

4 x 80x80x38mm (16,300rpm)

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)

22 kg

982 x 588 x 268 mm

1 x R281-Z91
2 x CPU heatsinks
1 x Rail kit

- Barebone package: 6NR281Z91MR-00-A*
- Motherboard: 9MZ91FS0NR-00-2*
- Rail kit: 25HB2-3A0202-K0R
- CPU heatsink: 25ST1-15320E-J1R
- Front panel board - CFP2001: 9CFP2001NR-00
- Backplane board - CBP20O5: 9CBP20O5NR-00
- Backplane board - CBP2020: 9CBP2020NR-00
- Expander board - CEP26O0: 9CEP26O0NR-00
- Fan module: 25ST2-883829-D0R
- Riser card - CRS2133: 9CRS2133NR-00
- Riser card - CRS2134: 9CRS2134NR-00
- Riser card - CRS2124: 9CRS2124NR-00
- Power supply: 25EP0-212007-F3S

Optional parts:

- RJ45 type COM cable: 25CR0-200400-Y4R