Mellanox MSB7890 36-Ports 100GBASE-X QSFP28 Layer 2 Rack-mountable Managed Front-to-Back Airflow Network Switch – MSB7890-ES2F

Mellanox SB7890 36-Port 100Gb/s QSFP28 EDR InfiniBand Layer 2 Managed Switch (Front-to-Back) — MSB7890-ES2F

The Mellanox MSB7890-ES2F is the SB7890, a 36-port 100Gb/s QSFP28 EDR InfiniBand Layer 2 managed switch with front-to-back airflow. Delivering 100Gb/s per port with sub-microsecond latency and enhanced management capabilities, it provides high-bandwidth, ultra-low-latency fabric connectivity for HPC clusters, AI/ML training, and high-performance storage networking requiring advanced InfiniBand EDR fabric management.

Key Features

• 36x 100Gb/s QSFP28 EDR InfiniBand ports
• Sub-microsecond latency for HPC and AI/ML workloads
• Front-to-back airflow — cold aisle/hot aisle data center compatible
• Layer 2 managed — advanced InfiniBand fabric management
• Rack-mountable 1U form factor
• Mellanox NVIDIA UFM compatible

Product Specifications

• Part Number: MSB7890-ES2F
• Manufacturer: Mellanox (NVIDIA)
• OEM Status: Retail
• Model: SB7890
• Ports: 36x 100Gb/s QSFP28 EDR InfiniBand
• Protocol: InfiniBand EDR
• Airflow: Front-to-Back
• Switching Layer: Layer 2
• Form Factor: 1U Rack-mountable

Switch & Port Specifications

• Port Speed: 100Gb/s EDR per port
• Total Ports: 36x QSFP28
• Switching Capacity: Up to 7.2 Tbps
• Latency: Sub-100ns (port-to-port)

Network & Protocol Specifications

• Protocol: InfiniBand EDR (100Gb/s)
• RDMA: Supported
• Adaptive Routing: Supported
• Management: Mellanox UFM, OpenSM

Use Cases

• HPC cluster interconnect with 100Gb/s EDR InfiniBand fabric
• AI/ML distributed training requiring ultra-low-latency GPU-to-GPU communication
• High-performance storage networking (NVMe-oF over InfiniBand)
• Advanced InfiniBand fabric management with enhanced Layer 2 features

Compatibility

• EDR InfiniBand QSFP28 cables and transceivers
• Mellanox ConnectX-4/5 and later InfiniBand HCAs
• Mellanox UFM for fabric management and monitoring
• OpenSM subnet manager for InfiniBand fabric configuration

Frequently Asked Questions

What is the difference between MSB7890-ES2F and MSB7800-ES2F?

Both are 36-port 100Gb/s EDR InfiniBand switches. The SB7890 offers enhanced management capabilities and Layer 2 features compared to the SB7800. The MSB7890-ES2F also has front-to-back airflow while the MSB7800-ES2F airflow should be verified against your rack configuration.

What does the -ES2F suffix indicate?

The -ES2F suffix indicates front-to-back airflow — air enters from the front and exits from the rear, suitable for cold aisle containment configurations.

The Mellanox MSB7890-ES2F delivers 36-port 100Gb/s EDR InfiniBand Layer 2 switching with front-to-back airflow and sub-microsecond latency — an advanced InfiniBand fabric switch for HPC clusters, AI/ML distributed training, and high-performance storage networking.