• NVIDIA 920-9B210-00RN-0D0 1U rackmount server with 24 hot-swap bays
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NVIDIA

NVIDIA 920-9B210-00RN-0D0 | Quantum-2 64-Port NDR InfiniBand Switch, 32x OSFP

920-9B210-00RN-0D0

Stock Status: Enquire

$66,539.00 inc. GST
$60,490.00 ex. GST
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Description

The NVIDIA MQM9790-NS2R Quantum-2 NDR InfiniBand switch delivers 64 ports of 400Gb/s throughput in a compact 1U design, ideal for AI, HPC, and high-performance computing workloads. With 32 OSFP connectors supporting 51.2Tb/s aggregate bidirectional bandwidth and 66.5 billion packets per second capacity, this unmanaged switch provides ultra-low latency connectivity for data center fabric deployments. The C2P airflow configuration ensures efficient cooling in rear-to-front airflow rack environments.

Features

NDR InfiniBand technology with 400Gb/s per port throughput
- 64 non-blocking NDR ports via 32 OSFP twin-port connectors
- Aggregate bidirectional bandwidth of 51.2 Tb/s
- NVIDIA SHARP v3 in-network computing for AI workload acceleration
- Adaptive routing for dynamic load balancing and congestion avoidance
- RDMA (Remote Direct Memory Access) for low-latency data transfers
- Self-healing network capabilities with enhanced QoS
- Support for multiple network topologies: Fat Tree, DragonFly+, Torus, SlimFly
- Backward compatible with HDR, EDR, and FDR InfiniBand
- Hot-swappable redundant power supplies (1+1 configuration)
- Hot-swappable fan modules (6+1 configuration)
- Unmanaged design for centralized fabric control via UFM
- Energy-efficient 80 PLUS Gold certified power supplies
- Compact 1U form factor for high-density deployments
- Designed for AI training, HPC, and extreme-scale data center fabrics

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

Port Configuration: 64 ports NDR InfiniBand 400Gb/s via 32 OSFP connectors
- Port Speed: 400Gb/s per port (NDR InfiniBand)
- Switching Capacity: 51.2 Tb/s aggregate bidirectional throughput
- Packet Forwarding Rate: 66.5 billion packets per second (BPPS)
- Form Factor: 1U rack-mountable fixed configuration
- Airflow: Connector-to-Power (C2P) reverse airflow
- Power Supply: 2x 2000W AC redundant hot-swappable PSUs
- Power Input: 200-240VAC, 80 PLUS Gold certified
- Management: Unmanaged (externally managed via NVIDIA UFM)
- Cooling: 6+1 hot-swappable fan modules with C2P airflow
- System Memory: 8GB DDR4 2666 MT/s SO-DIMM
- Storage: 16GB M.2 SSD SATA
- Processor: x86 Coffee Lake i3
- Management Port: 1x RJ45 UART console port
- Software: MLNX-OS compatible

FAQs

Q: What is the difference between managed and unmanaged versions of the QM9790?
A: The MQM9790-NS2R is an unmanaged version designed for external management via NVIDIA Unified Fabric Manager (UFM). Managed versions run onboard MLNX-OS software for local configuration via CLI, WebUI, or SNMP. Unmanaged switches are typically deployed in large-scale AI and HPC clusters where centralized fabric management is preferred.

Q: How many logical ports does this switch support?
A: The switch has 32 physical OSFP connectors, each supporting twin-port 400G technology to deliver 64 independent NDR 400Gb/s ports. The OSFP ports can also be split to provide up to 128 200Gb/s ports for flexible network topology design.

Q: What network topologies are supported by the Quantum-2 QM9790?
A: The QM9790 supports multiple InfiniBand topologies including Fat Tree, DragonFly+, SlimFly, and multi-dimensional Torus. The switch is ideal for AI training clusters, HPC compute fabrics, and high-throughput storage networks requiring extreme scalability and low latency.

Q: What is C2P airflow and when should it be used?
A: C2P (Connector-to-Power) airflow means air is drawn from the front port side and exhausted toward the rear power supply side. This reverse airflow configuration is suitable for data center hot-aisle/cold-aisle designs where front-facing ports are in the cold aisle. The P2C variant provides forward airflow for opposite rack configurations.

Q: Is this switch compatible with previous generation InfiniBand adapters?
A: Yes, the Quantum-2 QM9790 is backward compatible with HDR, EDR, and FDR InfiniBand generations. It can interoperate with older NVIDIA ConnectX adapter cards and switches using appropriate cables or adapters, such as OSFP-to-QSFP56 breakout cables for HDR connectivity.

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