2U 2-Node BigTwin Server. 6 hot-swap 3.5" NVMe/ SAS/ SATA drives per node 

Anewtech Systems Supermicro Servers Supermicro Singapore  SuperServer SYS-621BT-DNC8R  Industrial Twin Server Supermicro Computer 2 Hot-plug System Nodes in 2U SYS-621BT-DNC8R

Two hot-pluggable systems (nodes) in a 2U form factor. Each node supports the following:

  • Socket E (LGA 4677) support 5th/4th Gen Intel® Xeon® Scalable processors
  • Intel® C741
  • Up to 16 DIMMs ECC DDR5 Slots
  • 1 PCIe 5.0 x16 (LP) slot;
    2 PCIe 5.0 x8 (LP) slot;
    Tool-less support
    Internal PCIe 4.0 x8 for 2 M.2 NVMe support onboard
    Optional M.2 NVMe Boot Controller via SCC-A2NM2241G3-B1
  • Network connectivity via AIOM (OCP 3.0 compliant)
  • 6 Hot-Swap 3.5” drive bays (2x PCIe 5.0 NVMe and 4x PCIe 4.0 NVMe/SAS)
    Built-in SAS3 Support via Broadcom 3808; IT Mode
  • 4 cooling fans per 2U enclosure, 14.9K RPM; Shared Cooling Design
    Liquid Cooling Support
  • 2200W Redundant Power Supplies Titanium Level (96%+); Shared Power Design
Product Specification
Anewtech Systems Supermicro Servers Supermicro Singapore Twin-Server-Supermicro-SYS-621BT-DNC8R-Superserver
Product SKUSuperServer SYS-621BT-DNC8R (Black front & silver body)
MotherboardSuper X13DET-B
Processor (per Node)
CPUDual Socket E (LGA 4677) 5th/4th Gen Intel® Xeon® Scalable processors
Intel Xeon CPU Max Series with high bandwidth memory (HBM)
CoresUp to 32C/64T; Up to 112.5MB Cache
NoteSupports up to 300W TDP CPUs (Aircooled)*   
Supports up to 350W TDP CPUs (Liquid Cooled)   
*CPUs (air cooled) with TDP over 300W are only supported under specific conditions. Contact customer support for details.
System Memory (per Node)
MemoryMemory Capacity: 16 DIMM slots   
Up to 4TB: 16x 256 GB DRAM   
Memory Type: 4800MHz ECC DDR5 RDIMM
On-Board Devices (per Node)
SASSAS3 (12Gbps) via Broadcom® 3808 (IT mode)
ChipsetIntel® C741
Network ConnectivityVia AIOM
IPMISupport for Intelligent Platform Management Interface v.2.0   
IPMI 2.0 with virtual media over LAN and KVM-over-LAN support
Input / Output (per Node)
LAN1 RJ45 Dedicated BMC LAN port
USB2 USB 3.1 port(s) (2 rear)
Video1 VGA port(s)
Others2x M.2 for boot drive or caching     
M.2 form factor: NVMe double-sided 22x110mm   
Note: Enterprise-grade M.2 only for caching application
System BIOS
SoftwareSupemicro Out of Band (OOB) License (Included per Node)   
SuperCloud Composer   
Intel® Node Manager   
KVM with dedicated LAN   
IPMI 2.0   
Watch Dog   
SuperDoctor® 5
Power ConfigurationsACPI / APM Power Management
PC Health Monitoring
CPU8+4 Phase-switching voltage regulator   
Monitors for CPU Cores, Chipset Voltages, Memory.
FANFans with tachometer monitoring   
Pulse Width Modulated (PWM) fan connectors   
Status monitor for speed control
TemperatureMonitoring for CPU and chassis environment
Form Factor2U Rackmount
Dimensions and Weight
Height3.47" (88mm)
Width17.68" (449mm)
Depth30.5" (774mm)
Package9.76" (H) x 24.65" (W) x 45.28" (D)
WeightNet Weight: 55.1 lbs (25 kg)   
Gross Weight: 80.7 lbs (36.6 kg)
Available ColorBlack front & silver body
Front Panel
ButtonsPower On/Off button   
UID button
LEDsHDD activity LED   
Network activity LEDs   
Power status LED   
Universal Information (UID) LED
Expansion Slots (per Node)
PCI-Express (PCIe)2 PCIe 5.0 x8 LP slot(s)   
1 PCIe 5.0 x16 LP slot(s)
Drive Bays / Storage (per Node)
Hot-swap6x 3.5" hot-swap NVMe/SAS drive bays   
(2x PCI-E 5.0 NVMe and 4x PCI-E 4.0 NVMe/SAS)
M.22 M.2 NVMe
System Cooling
Fans4x 14.9K RPM Heavy Duty 8cm Fan(s)
Liquid CoolingDirect to Chip (D2C) Cold Plate (optional)
Power Supply2200W Redundant Power Supplies with PMBus
Total Output Power2200W : 100 - 240 Vac   
2090W : 230 - 240 Vdc for CCC only
Dimension (W x H x L)45 x 40 x 480 mm
AC Input1200W: 100-127Vac / 50-60Hz   
2090W: 180-220Vac (for UL/cUL only)   
1800W: 200-220Vac / 50-60Hz   
1980W: 220-230Vac / 50-60Hz   
2200W: 220-240Vac (for UL/cUL only)   
2090W: 230-240Vac / 50-60Hz   
2090W: 230-240Vdc (for CCC only)
+12VMax: 100A / Min: 0A (100-127Vac)   
Max: 150A / Min: 0A (200-220Vac)   
Max: 165A / Min: 0A (220-230Vac)   
Max: 174.17A / Min: 0A (180-220Vac, UL/cUL only)   
Max: 174.17A / Min: 0A (230-240Vac)   
Max: 174.17A / Min: 0A (230-240Vdc, CCC only)   
Max: 183.33A / Min: 0A (220-240Vac, UL/cUL only)
12V SBMax: 2.1A / Min: 0A
Operating Environment
RoHSRoHS Compliant
Environmental Spec.Operating Temperature: 10°C ~ 35°C (50°F ~ 95°F)   
Non-operating Temperature: -40°C to 60°C (-40°F to 140°F)   
Operating Relative Humidity: 8% to 90% (Non-Condensing)   
Non-operating Relative Humidity: 5% to 95% (Non-Condensing)

BigTwin®: Industry-leading Multi-node Architecture

Supermicro X13 BigTwin® systems provide maximum performance and serviceability in a multi-node architecture, with dual 5th Gen Intel® Xeon® processors per node and a hotswappable toolless design.

Optimized for density (2U4N) or storage (2U2N), BigTwin systems with shared components can be more cost-effective than standard 1U servers, with Supermicro’s Resource Saving Architecture of shared power and cooling reducing TCO and TCE. A range of storage configurations are also available, with up to 24 hot-swap 2.5” NVMe drives in a 2U rackmount chassis.


Highly configurable 2U 2-node systems optimized for compute or storage density


Highly Modular Multi-Node Systems with ToolLess Design

  • Dual socket architecture featuring 5th/4th Gen Intel® Xeon® Scalable processors
  • Optimized thermal design with liquid cooling options
  • All-hybrid hot-swappable NVMe/SAS/SATA drive bays
  • Resource Saving Architecture with shared power and cooling for increased efficiency
  • Flexible networking with up to 400G Ethernet per node

Highly Modular Multi-Node Systems optimized for density or storage


SYS-621BT-H Series

2U 4-Node 
3x 3.5” NVMe/SAS/SATA drives (per node)


SYS-221BT-H Series

2U 4-Node
6x 2.5” NVMe/SAS/SATA drives (per node)


SYS-621BT-D Series

2U 2-Node
6x 3.5” NVMe/SAS/SATA drives (per node)


SYS-221BT-D Series

2U 2-Node 
12x 2.5” NVMe/SAS/SATA drives (per node)


5th Gen Intel® Xeon® Scalable Processors

  • Up to 64 cores and 385W TDP per CPU
  • Support for Intel Xeon® Max Series CPUs with High Bandwidth Memory
  • Support for PCIe 5.0, DDR5 and CXL 1.1
  • Built on the Intel® 7 process
  • Built in accelerators:
    • Intel AMX
    • Intel® Dynamic Load Balancer
    • Intel® QuickAssist
    • Technology (QAT)
    • Intel vRAN Boost

Delivering Solutions Optimized for Tomorrow’s Data Center Workloads

Complete Rack-Scale Solutions

  • Full design, integration, validation and testing services for rack-scale and multi-rack clusters
  • Complete rack-scale liquid cooling solutions developed in house

Performance and Energy Optimized

  • Enhanced thermal capacity to support the highest performing CPUs and GPUs
  • Optimized to run in high-temperature data center environments up to 40°C

Improved Security and Manageability

  • Industry-standard compliance for hardware and silicon Root of Trust (RoT)
  • Cryptographical attestation of components throughout the entire supply chain

Supports Open Industry Standards

  • The latest industry technologies including PCIe 5.0, DDR5, and CXL
  • Open Compute Project (OCP) standards including OCP 3.0, OAM, ORV2 and OSF as well as Open BMC