Due to the COVID-19 crisis, some orders may be delayed in fulfillment and shipping. Our sales team is able to advise on product availability and hardware recommendations. We are working very hard to support our customers and ensure safe conditions for our staff. Read More about how we’re handling COVID-19 Here. Due to the COVID-19 crisis, some orders may be delayed in fulfillment. Our sales team is able to advise on product availability and hardware recommendations. Read more Here.
Scroll Back to Top menu
AVADirect Custom Computers
My Cart
menu

R281-Z91 (rev. 100), 2U, AMD EPYC™ 7000 Series, 20x SATA, 6x U.2, 1x M.2, 32x DDR4, Dual 1Gb Ethernet, 2x 1200W Rdt PSU

SKU: 12365500

Manufacturer: GIGABYTE

MPN: R281-Z91

Availability: Out of Stock


Price: $2,697.01
or as low as $87/month
  • Dual AMD EPYC™ 7000 series processor families
  • 8-Channel RDIMM/LRDIMM DDR4, 32 x DIMMs
  • 2 x 1Gb/s BASE-T LAN ports (Intel® I350-AM2)
  • 1 x Dedicated management port
  • 6 x 2.5" U.2, 20 x 2.5" SATA/SAS hot-swappable HDD/SSD bays
  • Ultra-Fast M.2 with PCIe Gen3 x4 interface
  • 7 x PCIe Gen3 expansion slots
  • Aspeed® AST2500 remote management controller
  • 1200W 80 PLUS Platinum redundant PSU
Dimensions (WxHxD,mm) 2U
438 x 87 x 710
Motherboard MZ91-FS0
CPU AMD EPYC™ 7000 series processor family
Dual processors, 14nm, Socket SP3
Up to 32-core, 64 threads per processor
TDP up to 180W
NOTE: If only 1 CPU is installed, some PCIe or memory functions might be unavailable
Chipset System on Chip
Memory 32 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
Audio -
Storage Front side: 6 x 2.5" U.2, 18 x 2.5" SATA/SAS hot-swappable HDD/SSD bays
Rear side: 2 x 2.5" SATA/SAS hot-swappable HDD/SSD bays
LSI SAS35x36 expander
Bandwidth: SATAIII 6Gb/s or SAS 12Gb/s per port
Default configuration supports:
6 x U.2, 0 x SAS/SATA drives
SAS card is required to enable the drive bays
RAID For SAS/SATA supported only
Depends on RAID card
Peripheral Drives -
Expansion Slots Riser Card CRS2133:
- 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 CRS2134:
- 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, Occupied by CNV3122, 2 x U.2 ports

Riser Card CRS2124:
- 1 x PCIe x8 slots (Gen3 x0 or x8), Low profile half-length
- 1 x PCIe x16 slot (Gen3 x16 or x8), Low profile half-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
Internal I/O 1 x 14-pin ATX main power connector
3 x 4-pin ATX main power connector
3 x 8-pin ATX 12V power connectors
1 x 6-pin ATX 12V power connectors
6 x SlimSAS connectors
1 x M.2 slot
2 x CPU fan headers
1 x USB 3.0 header
1 x TPM header
5 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 PMBus connector
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 type)
2 x RJ45
1 x MLAN
1 x ID button with LED
Backplane I/O Front side_CBP20O2: 24 x SATA/SAS ports
Rear side_CBP2020: 2 x SATA/SAS ports
Bandwidth: SATAIII 6Gb/s or SAS 12Gb/s per port
Front side_CEP26O0: 6 x U.2 ports
Bandwidth: PCIe Gen3 x4 per port
TPM 1 x TPM header with LPC interface
Optional TPM2.0 kit:CTM000
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
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 Windows Server 2012 R2 (x64)
Windows Server 2016

Red Hat Enterprise Linux 6.9
Red Hat Enterprise Linux 7.3

SUSE Linux Enterprise Server 11.4
SUSE Linux Enterprise Server 12 .2

Ubuntu 16.04
Ubuntu 17.04

VMware ESXi 6.5
Weight 22 kg
System Fans 4 x 80x80x38mm (16'300rpm)
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)
Packaging Dimensions 982 x 588 x 268 mm
Packaging Content 1 x R281-Z91
2 x CPU heatsinks
1 x Rail kit
Part Numbers Barebone package: 6NR281Z91MR-00
Part Numbers:
- Motherboard: 9MZ91FS0NR-00
- Rail kit: 25HB2-3A0202-K0R
- CPU heatsink: 25ST1-15320E-J1R
- Back plane board_24-port: 9CBP20O2NR-00
- Back plane board_2-port: 9CBP2020NR-00
- Back plane board_U.2 type: 9CEP26O0NR-00
- Front panel board: 9CFP2001NR-00
- Power supply: 25EP0-212002-F3S
- RJ45 type COM cable: 25CR0-200400-Y4R (in option) - Riser card - CRS2131: 9CRS2131NR-00
- Riser card - CRS2132: 9CRS2132NR-00
- Riser card - CRS2123: 9CRS2124NR-00