• Silver-colored supermicro sys-621bt-hnc8r x13 bigtwin 2u 4-node rack server back with expansion slots and network ports
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Supermicro

Supermicro SYS-621BT-HNC8R | X13 BigTwin 2U 4-Node Rack Server, Dual Xeon Scalable

SYS-621BT-HNC8R

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Description

The Supermicro SYS-621BT-HNC8R is a high-density BigTwin server delivering four hot-pluggable compute nodes in a compact 2U form factor. Each node supports dual 4th or 5th Gen Intel Xeon Scalable processors, up to 4TB DDR5 memory, and 3 hot-swap 3.5-inch NVMe/SAS/SATA drives with integrated Broadcom 3808 SAS controller. Designed for hyperconverged infrastructure, scale-out file storage, and container workloads, the system features PCIe 5.0 expansion, AIOM networking, and shared redundant 3000W Titanium power supplies for enterprise-class efficiency and reliability.

Features

Four hot-pluggable compute nodes in 2U form factor for maximum density
- Dual 4th/5th Gen Intel Xeon Scalable processor support per node with up to 60 cores per CPU
- Up to 4TB DDR5-5600 memory per node across 16 DIMM slots
- PCIe 5.0 expansion with 2x x16 low-profile slots per node
- Broadcom 3808 SAS3 controller per node with 12Gb/s throughput
- Hot-swap 3.5-inch NVMe/SAS/SATA drive bays with direct-attached backplane
- AIOM networking with OCP 3.0 compliance for flexible network adapter options
- Onboard M.2 NVMe support with optional hardware RAID1 boot controller
- IPMI 2.0 with dedicated management port, KVM, and virtual media
- Shared 3000W redundant Titanium power supplies for superior efficiency
- Shared cooling design with high-speed fans optimized for multi-node thermals
- Liquid cooling support for high-performance processor configurations
- Tool-less PCIe slot access for simplified maintenance

Warranty

All products sold by XS Network Tech include a 12-month warranty on both new and used items. Our in-house technical team thoroughly tests used hardware prior to sale to ensure enterprise-grade reliability.

All technical data should be verified on the manufacturer data sheets.

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Technical Specifications

FAQs

Technical Specifications

Form Factor: 2U rackmount, 4-node BigTwin architecture
- Processor: Dual Socket E (LGA 4677) per node supporting 4th/5th Gen Intel Xeon Scalable processors
- Chipset: Intel C741 per node
- Memory: 16 DIMM slots per node supporting up to 4TB DDR5-5600 ECC RDIMM
- Storage: 3x hot-swap 3.5-inch drive bays per node (2x PCIe 5.0 NVMe/SAS, 1x PCIe 4.0 NVMe/SAS)
- Storage Controller: Broadcom 3808 12Gb/s SAS3 HBA (IT mode) per node
- Expansion: 2x PCIe 5.0 x16 low-profile slots per node; internal PCIe 4.0 x8 for 2x M.2 NVMe onboard
- Networking: AIOM slot per node (OCP 3.0 compliant); 1x RJ45 dedicated IPMI 2.0 port per node
- Power Supply: Shared redundant 3000W 80 PLUS Titanium (96%+ efficiency)
- Management: IPMI 2.0, SuperDoctor 5, Supermicro SuperServer Automation Assistant
- Cooling: 4x 14.9K RPM fans per 2U enclosure (shared); liquid cooling support

FAQs

Q: What is the BigTwin architecture and what are its benefits?
A: BigTwin is Supermicro's multi-node architecture that fits four independent hot-pluggable server nodes into a single 2U chassis with shared power and cooling. This design maximizes compute density, reduces datacenter footprint, and lowers power and cooling costs while providing independent node serviceability.

Q: Can each node be configured with different CPU and memory specifications?
A: Yes, each of the four nodes operates independently and can be configured with different Intel Xeon Scalable processor models and memory configurations to match specific workload requirements. Each node has its own motherboard, processors, memory, storage, and networking.

Q: What storage configurations are supported per node?
A: Each node supports 3 hot-swap 3.5-inch drive bays compatible with NVMe, SAS, or SATA drives. Additionally, each node has internal support for 2x M.2 NVMe drives via onboard PCIe 4.0 x8 interface, with optional hardware RAID1 boot controller available.

Q: What networking options are available for the SYS-621BT-HNC8R?
A: Each node includes an AIOM slot for OCP 3.0-compliant network adapters, allowing flexible networking options from 1GbE to 100GbE. Each node also has a dedicated RJ45 port for out-of-band IPMI 2.0 management with KVM and virtual media support.

Q: What workloads is this system optimized for?
A: The SYS-621BT-HNC8R is ideal for hyperconverged infrastructure, scale-out file storage, container orchestration platforms, virtualization clusters, and software-defined storage deployments where high compute density and independent node scalability are essential.

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