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SYS-621BT-HNC8R

SYS-621BT-HNC8R

Supermicro 2U 4Nodes Dual Processor Rackmount Server
 
Four 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
  • 16 DIMM Slots supporting up to 4TB of memory; ECC RDIMMs up to DDR5-5600
  • Internal PCIe 4.0 x8 for 2 M.2 NVMe support onboard: 2 PCIe 5.0 x16 (LP) slot; Tool-less support; Optional M.2 (22x80) HW RAID1 NVMe Boot Controller via SCC-A2NM2241G3-B1
  • Network connectivity via AIOM (OCP 3.0 compliant)
  • Built-in SAS3 Support via Broadcom 3808; IT Mode 3 hot-swap 3.5" drive bays (2x PCIe 5.0 NVMe/SAS and 1x PCIe 4.0  NVMe/SAS)
  • Liquid Cooling Support 4 cooling fans per 2U enclosure, 14.9K RPM; Shared Cooling Design
  • 3000W Redundant Power Supplies Titanium Level (96%+); Shared Power Design
  • Hyperconverged Infrastructure, Scale-Out File Storage, Container Storage

Storage configuration notice:
(per node)
External:
3x 3.5" Hot-swap Drive Bays
2x M.2
To maintain quality and integrity, this product is sold only as a completely-assembled system (for optimal performance, 16 DIMMs are recommended per node) Minimum 2 CPUs, 2 DIMMs, 1 NIC and 1 Drive per node.
 

Note: Image above may show a varied configuration or optional part. Please refer to parts list for standard parts included.

Configure Options

NETWORK CARD ▼
Qty / Pick Option Price
Intel® 1G Ethernet Adapter I350-T2V2 (2x RJ-45)
Intel® 1G Ethernet Adapter I350-T4V2 (4x RJ-45)
Intel® 10G Ethernet Adapter X710-DA2 (2x QSFP+)
Intel® 40G Ethernet Adapter XL710-QDA1 (1x QSFP+)
Intel® 40G Ethernet Adapter XL710-QDA2 (2x QSFP+)
Intel® 10G Ethernet Adapter X550-T1 (1x RJ45)
Intel® 10G Ethernet Adapter X550-T2 (2x RJ45)
Intel® 25G Ethernet Adapter XXV710-DA1 (1x SFP28)
Intel® 25G Ethernet Adapter XXV710-DA2 (2x SFP28)
Intel® 10G Ethernet Adapter X520-DA2 (2x SFP+)
Mellanox NVIDIA 10/25GbE MCX512A-ACAT ConnectX-5 Ethernet Adapter (2x QSFP28)
Mellanox NVIDIA 100GbE MCX516A-CCAT ConnectX-5 Ethernet Adapter (2x QSFP28)
Mellanox NVIDIA 200GbE MCX653105A-HDAT-SP ConnectX-6 VPI Ethernet Adapter (1x QSFP56)
Mellanox NVIDIA 200GbE MCX653106A-HDAT-SP ConnectX-6 VPI Ethernet Adapter (2x QSFP56)
Broadcom NetXtreme 1G PCIe 2.0 x1 Ethernet Card (2x RJ45)
Broadcom NetXtreme 1G PCIe 2.0 x4 Ethernet Card (4x RJ45)
Broadcom NetXtreme 10G PCIe 3.0 x8 Ethernet Card (2x RJ45)
Broadcom NetXtreme 10G PCIe 3.0 x8 Ethernet Card (2x SFP+)
Broadcom NetXtreme 25G PCIe 3.0 x8 Ethernet Card (2x SFP28)
Broadcom NetXtreme 25G PCIe 4.0 x16 Ethernet Card (4x SFP28)
Broadcom NetXtreme 100G PCIe 4.0 x16 EthernetCard (2x QSFP56)
OPERATING SYSTEM ▼
Qty / Pick Option Price
*Please contact our sales for more operating system options
Debian Linux (No Media) (32-Bit/64-Bit)
Fedora Linux Desktop Edition (No Media) (32-Bit/64-Bit)
Ubuntu Linux LTS Server Edition (No Media) (32-Bit/64-Bit)
CentOS Enterprise Linux (No Media) (32-Bit/64-bit)
Fedora Linux Workstation Edition 64-bit (No Media)
Microsoft Windows Server 2025 Standard 64-bit-1User
WARRANTY ▼
Qty / Pick Option Price
*1 Year Parts Replacement Warranty
3 Year Parts Replacement Warranty - Server Value $500 to $2000
3 Year Parts Replacement Warranty - Server Value $2001 to $4000
3 Year Parts Replacement Warranty - Server Value $4001 to $7000
3 Year Parts Replacement Warranty - Server Value $7001 to $10000
3 Year Parts Replacement Warranty - Server Value Over $10000
CPU-1st Node ▼
Qty / Pick Option Price
Intel® Xeon® Scalable 4th Gen Silver Processor 4416+ (2.00 GHz 165W)
Intel® Xeon® Scalable 4th Gen Silver Processor 4410Y (2.00 GHz 155W)
Intel® Xeon® Scalable 4th Gen Silver Processor 4410T (2.70 GHz 150W)
Intel® Xeon® Scalable 4th Gen Gold Processor 6428N (1.80 GHz 185W)
Intel® Xeon® Scalable 4th Gen Gold Processor 6421N (1.80 GHz 185W)
Intel® Xeon® Scalable 4th Gen Gold Processor 5418N (1.80 GHz 165W)
Intel® Xeon® Scalable 4th Gen Gold Processor 5416S (2.00 GHz 150W)
Intel® Xeon® Scalable 4th Gen Gold Processor 5411N (1.90 GHz 165W)
Intel® Xeon® Scalable 5th Gen Bronze Processor 3508U (2.10 Ghz 125W)
Intel® Xeon® Scalable 5th Gen Silver Processor 4509Y (2.60 Ghz 125W)
Intel® Xeon® Scalable 5th Gen Silver Processor 4510 (2.40 Ghz 150W)
Intel® Xeon® Scalable 5th Gen Silver Processor 4510T (2.00 Ghz 115W)
Intel® Xeon® Scalable 5th Gen Silver Processor 4514Y (2.00 Ghz 150W)
Intel® Xeon® Scalable 5th Gen Silver Processor 4516Y+ (2.20 Ghz 185W)
Intel® Xeon® Scalable 5th Gen Gold Processor 5512U (2.10 Ghz 185W)
Intel® Xeon® Scalable 5th Gen Gold Processor 5515+ (3.20 Ghz 165W)
Memory-1st Node ▼
Qty / Pick Option Price
Samsung 16GB DDR5 5600MHz ECC RDIMM Memory (Recommend for Xeon 5th Gen CPU)
Samsung 32GB DDR5 5600MHz ECC RDIMM Memory (Recommend for Xeon 5th Gen CPU)
Samsung 64GB DDR5 5600MHz ECC RDIMM Memory (Recommend for Xeon 5th Gen CPU)
CPU-2nd Node ▼
Qty / Pick Option Price
*No Processor
Intel® Xeon® Scalable 4th Gen Silver Processor 4416+ (2.00 GHz 165W)
Intel® Xeon® Scalable 4th Gen Silver Processor 4410Y (2.00 GHz 155W)
Intel® Xeon® Scalable 4th Gen Silver Processor 4410T (2.70 GHz 150W)
Intel® Xeon® Scalable 4th Gen Gold Processor 6428N (1.80 GHz 185W)
Intel® Xeon® Scalable 4th Gen Gold Processor 6421N (1.80 GHz 185W)
Intel® Xeon® Scalable 4th Gen Gold Processor 5418N (1.80 GHz 165W)
Intel® Xeon® Scalable 4th Gen Gold Processor 5416S (2.00 GHz 150W)
Intel® Xeon® Scalable 4th Gen Gold Processor 5411N (1.90 GHz 165W)
Intel® Xeon® Scalable 5th Gen Bronze Processor 3508U (2.10 Ghz 125W)
Intel® Xeon® Scalable 5th Gen Silver Processor 4509Y (2.60 Ghz 125W)
Intel® Xeon® Scalable 5th Gen Silver Processor 4510 (2.40 Ghz 150W)
Intel® Xeon® Scalable 5th Gen Silver Processor 4510T (2.00 Ghz 115W)
Intel® Xeon® Scalable 5th Gen Silver Processor 4514Y (2.00 Ghz 150W)
Intel® Xeon® Scalable 5th Gen Silver Processor 4516Y+ (2.20 Ghz 185W)
Intel® Xeon® Scalable 5th Gen Gold Processor 5512U (2.10 Ghz 185W)
Intel® Xeon® Scalable 5th Gen Gold Processor 5515+ (3.20 Ghz 165W)
Memory-2nd Node ▼
Qty / Pick Option Price
*No Memory
Samsung 16GB DDR5 5600MHz ECC RDIMM Memory (Recommend for Xeon 5th Gen CPU)
Samsung 32GB DDR5 5600MHz ECC RDIMM Memory (Recommend for Xeon 5th Gen CPU)
Samsung 64GB DDR5 5600MHz ECC RDIMM Memory (Recommend for Xeon 5th Gen CPU)
CPU-3rd Node ▼
Qty / Pick Option Price
*No Processor
Intel® Xeon® Scalable 4th Gen Silver Processor 4416+ (2.00 GHz 165W)
Intel® Xeon® Scalable 4th Gen Silver Processor 4410Y (2.00 GHz 155W)
Intel® Xeon® Scalable 4th Gen Silver Processor 4410T (2.70 GHz 150W)
Intel® Xeon® Scalable 4th Gen Gold Processor 6428N (1.80 GHz 185W)
Intel® Xeon® Scalable 4th Gen Gold Processor 6421N (1.80 GHz 185W)
Intel® Xeon® Scalable 4th Gen Gold Processor 5418N (1.80 GHz 165W)
Intel® Xeon® Scalable 4th Gen Gold Processor 5416S (2.00 GHz 150W)
Intel® Xeon® Scalable 4th Gen Gold Processor 5411N (1.90 GHz 165W)
Intel® Xeon® Scalable 5th Gen Bronze Processor 3508U (2.10 Ghz 125W)
Intel® Xeon® Scalable 5th Gen Silver Processor 4509Y (2.60 Ghz 125W)
Intel® Xeon® Scalable 5th Gen Silver Processor 4510 (2.40 Ghz 150W)
Intel® Xeon® Scalable 5th Gen Silver Processor 4510T (2.00 Ghz 115W)
Intel® Xeon® Scalable 5th Gen Silver Processor 4514Y (2.00 Ghz 150W)
Intel® Xeon® Scalable 5th Gen Silver Processor 4516Y+ (2.20 Ghz 185W)
Intel® Xeon® Scalable 5th Gen Gold Processor 5512U (2.10 Ghz 185W)
Intel® Xeon® Scalable 5th Gen Gold Processor 5515+ (3.20 Ghz 165W)
Memory-3rd Node ▼
Qty / Pick Option Price
*No Memory
Samsung 16GB DDR5 5600MHz ECC RDIMM Memory (Recommend for Xeon 5th Gen CPU)
Samsung 32GB DDR5 5600MHz ECC RDIMM Memory (Recommend for Xeon 5th Gen CPU)
Samsung 64GB DDR5 5600MHz ECC RDIMM Memory (Recommend for Xeon 5th Gen CPU)
CPU-4th Node ▼
Qty / Pick Option Price
*No Processor
Intel® Xeon® Scalable 4th Gen Silver Processor 4416+ (2.00 GHz 165W)
Intel® Xeon® Scalable 4th Gen Silver Processor 4410Y (2.00 GHz 155W)
Intel® Xeon® Scalable 4th Gen Silver Processor 4410T (2.70 GHz 150W)
Intel® Xeon® Scalable 4th Gen Gold Processor 6428N (1.80 GHz 185W)
Intel® Xeon® Scalable 4th Gen Gold Processor 6421N (1.80 GHz 185W)
Intel® Xeon® Scalable 4th Gen Gold Processor 5418N (1.80 GHz 165W)
Intel® Xeon® Scalable 4th Gen Gold Processor 5416S (2.00 GHz 150W)
Intel® Xeon® Scalable 4th Gen Gold Processor 5411N (1.90 GHz 165W)
Intel® Xeon® Scalable 5th Gen Bronze Processor 3508U (2.10 Ghz 125W)
Intel® Xeon® Scalable 5th Gen Silver Processor 4509Y (2.60 Ghz 125W)
Intel® Xeon® Scalable 5th Gen Silver Processor 4510 (2.40 Ghz 150W)
Intel® Xeon® Scalable 5th Gen Silver Processor 4510T (2.00 Ghz 115W)
Intel® Xeon® Scalable 5th Gen Silver Processor 4514Y (2.00 Ghz 150W)
Intel® Xeon® Scalable 5th Gen Silver Processor 4516Y+ (2.20 Ghz 185W)
Intel® Xeon® Scalable 5th Gen Gold Processor 5512U (2.10 Ghz 185W)
Intel® Xeon® Scalable 5th Gen Gold Processor 5515+ (3.20 Ghz 165W)
Memory-4th Node ▼
Qty / Pick Option Price
*No Memory
Samsung 16GB DDR5 5600MHz ECC RDIMM Memory (Recommend for Xeon 5th Gen CPU)
Samsung 32GB DDR5 5600MHz ECC RDIMM Memory (Recommend for Xeon 5th Gen CPU)
Samsung 64GB DDR5 5600MHz ECC RDIMM Memory (Recommend for Xeon 5th Gen CPU)
(Optional) Enterprise-Class HDD/SSD ▼
Qty / Pick Option Price
Seagate Exos 3.5" SAS 12Gb/s 7200 RPM HDD 2TB
WD Ultrastar 3.5" SAS 12Gb/s 7200 RPM HDD 6TB
WD Ultrastar 3.5" SAS 12Gb/s 7200 RPM HDD 4TB
WD Ultrastar 3.5" SAS 12Gb/s 7200 RPM HDD 8TB
WD Ultrastar 3.5" SAS 12Gb/s 7200 RPM HDD 10TB
WD Ultrastar 3.5" SAS 12Gb/s 7200 RPM HDD 12TB
WD Ultrastar 3.5" SAS 12Gb/s 7200 RPM HDD 14TB
Seagate Exos 3.5" SAS 12Gb/s 7200 RPM HDD 4TB
Seagate Exos 3.5" SAS 12Gb/s 7200 RPM HDD 6TB
Seagate Exos 3.5" SAS 12Gb/s 7200 RPM HDD 8TB
Seagate Exos 3.5" SAS 12Gb/s 7200 RPM HDD 10TB
Seagate Exos 3.5" SAS 12Gb/s 7200 RPM HDD 12TB
Seagate Exos 3.5" SAS 12Gb/s 7200 RPM HDD 14TB
Seagate Exos 3.5" SAS 12Gb/s 7200 RPM HDD 16TB
Seagate Exos 3.5" SAS 12Gb/s 7200 RPM HDD 18TB
WD Ultrastar 3.5" SAS 12Gb/s 7200 RPM HDD 16TB
WD Ultrastar 3.5" SAS 12Gb/s 7200 RPM HDD 18TB
Samsung PM9A3 2.5" U.2 NVMe SSD 960GB
Samsung PM9A3 2.5" U.2 NVMe SSD 1.92TB
Samsung PM9A3 2.5" U.2 NVMe SSD 3.84TB
Samsung PM9A3 2.5" U.2 NVMe SSD 7.68TB
Samsung PM9A3 2.5" U.2 NVMe SSD 15TB
WD Ultrastar 3.5" SAS 12Gb/s 7200 RPM HDD 20TB
WD Ultrastar 3.5" SAS 12Gb/s 7200 RPM HDD 22TB
Seagate Exos 3.5" SAS 12Gb/s 7200 RPM HDD 20TB
NVMe M.2 ▼
Qty / Pick Option Price
*No NVMe M.2 Drives
Samsung 980 PRO MZ-V8P500B/AM M.2 NVMe SSD 500GB
Samsung 980 PRO MZ-V8P1T0B/AM M.2 NVMe SSD 1TB
Samsung 970 EVO Plus MZ-V7S1T0B/AM M.2 NVMe SSD 1TB
Samsung 970 EVO Plus MZ-V7S2T0B/AM M.2 NVMe SSD 2TB
Samsung 980 PRO MZ-V8P2T0B/AM M.2 NVMe SSD 2TB
Samsung 970 EVO Plus MZ-V7S500B/AM M.2 NVMe SSD 500GB
WD Black SN850 M.2 G4 NVMe SSD 500GB
WD Black SN850 M.2 G4 NVMe SSD 1TB
WD Black SN850 M.2 G4 NVMe SSD 2TB
SAMSUNG PM9A3 M.2 Nvme SSD 960GB
SAMSUNG PM9A3 M.2 Nvme SSD 1.92TB
SAMSUNG PM9A3 M.2 Nvme SSD 3.84TB
Samsung 990 PRO MZ-V9P1T0B/AM M.2 NVMe SSD 1TB
Samsung 990 PRO MZ-V9P2T0B/AM M.2 NVMe SSD 2TB
Samsung 970 EVO Plus MZ-V7S500B/AM M.2 NVMe SSD 250GB

Technical Specifications

Processor
(per Node)
CPU:
Dual Socket E (LGA-4677)
5th Gen Intel® Xeon® / 4th Gen Intel® Xeon® Scalable processors
Supports Intel Xeon CPU Max Series with high bandwidth memory (HBM)​

Core Count:
Up to 64C/128T; Up to 320MB Cache per CPU

Note:
Supports up to 185W TDP CPUs (Air Cooled)
Supports up to 350W TDP CPUs (Liquid Cooled)​
Air Cooled CPUs with TDP over 185W only supported under specific conditions. Contact a Supermicro representative for details.
Memory
(per Node)
Memory:
Slot Count: 16 DIMM slots
Max Memory (1DPC): Up to 4TB 5600MT/s ECC DDR5 RDIMM
Chassis
2U Rackmount Chassis
Dimensions
Height:
3.47" (88mm)
Width:
17.68" (449mm)
Depth:
30.5" (774mm)
Drive Bays
(per Node)
Hot-swap:
3x 3.5" hot-swap NVMe/SAS drive bays (2x PCI-E 5.0 NVMe/SAS and 1x PCI-E 4.0 NVMe/SAS)

M.2:
2 M.2 NVMe
Expansion Slots
(per Node)
PCI-Express (PCIe):
2 PCIe 5.0 x16 LP slot(s)
Power Supply
3000W 1U Redundant Power Supply
Total Output Power:
3000W : 208 - 240 Vac
3000W : 240 - 240 Vdc for CQC only

Dimension (W x H x L):
45 x 40 x 480 mm

AC Input:
1400W: 100-127Vac / 50-60Hz
2880W: 200-207Vac / 50-60Hz
3000W: 208-240Vac / 50-60Hz

DC Input:
3000W: 240-240Vdc for CQC only/ 50-60Hz

12V SB:
Max: 4.5A / Min: 0A

Certification:
Titanium Level
Onboard Devices
(per Node)
SAS:
SAS3 (12Gbps) via Broadcom® 3808 (IT mode)

Chipset:
Intel® C741

Network Connectivity:
Via AIOM

IPMI:
Support for Intelligent Platform Management Interface v.2.0
IPMI 2.0 with virtual media over LAN and KVM-over-LAN support
Front Panel
Buttons:
Power On/Off button
UID button

LEDs:
HDD activity LED
Network activity LEDs
Power status LED
Universal Information (UID) LED
Input / Output
(per Node)
LAN:
1 RJ45 Dedicated BMC LAN port

USB:
2 USB 3.1 port(s) (2 rear)

Video:
1 VGA port(s)

Others:
2x M.2 for boot drive or caching  
M.2 form factor: NVMe double-sided 22x110mm
Note: Enterprise-grade M.2 only for caching application
Cooling
Fans:
4x 14.9K RPM Heavy Duty 8cm Fan(s)

Liquid Cooling:
Direct to Chip (D2C) Cold Plate (optional)
BIOS
BIOS Type:
AMI 32MB Flash ROM
Operating Environment
RoHS:
RoHS 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)
Detailed Specification
Management
Software:
Supermicro Out of Band (OOB) License (Included per Node)
SuperCloud Composer
SSM
Intel® Node Manager
SPM
KVM with dedicated LAN
IPMI 2.0
SUM
Watch Dog
SuperDoctor® 5

Power Configurations:
ACPI / APM Power Management

Frequently Asked Questions

Yes. Spectrum Servers offers custom configurations for all server products. Use the Configure Options section above to select processors, memory, storage and other components, or request a custom quote.

All products sold by Spectrum Servers include the manufacturer's standard warranty. Extended warranty options are available. Contact our sales team at sales@spectrumservers.com or call +1 (626) 956-0100 for details.

Lead times vary by product and configuration. In-stock items typically ship within 1–3 business days. Custom configured systems may take 5–15 business days. Contact us for specific availability and lead time information.

Yes. Spectrum Servers provides technical support for all products sold. Our engineers are available Monday–Friday 8:30AM–5:30PM PST. Reach us at +1 (800) 526-8650 or email sales@spectrumservers.com.

Yes. Volume discounts are available for orders of 5 or more units. Please request a quote or contact our sales team directly for pricing on larger orders.
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