NVIDIA Mellanox MIS5023Q-1BFR InfiniScale IV QDR InfiniBand Switch, 18x QSFP Ports, Unmanaged, 1U, 1x PSU, P2C Airflow: This enterprise InfiniBand switch is the NVIDIA Mellanox InfiniScale IV, part number MIS5023Q-1BFR. It is a 1U rack-mount unmanaged switch with 18 QSFP ports providing QDR InfiniBand at 40Gb/s per port (1.44 Tb/s aggregate). The -1BFR suffix denotes 1x PSU and P2C airflow. This is a refurbished unit, tested by T.E.S IT-SOLUTIONS.
Engineering Context
The InfiniScale IV delivers 1.44 Tb/s aggregate bandwidth across 18 QSFP ports at QDR 40Gb/s each. Forwarding latency is approximately 200 nanoseconds. Unmanaged operation requires an external subnet manager (OpenSM or NVIDIA UFM). Supports QDR and DDR backward compatibility.
Deployment & Use Cases
QDR InfiniBand fabric for small-to-medium HPC clusters running MPI workloads. Leaf switch in fat-tree topologies. Legacy InfiniBand environments. Lab and development for IB testing.
Technical Specifications
- OEM: NVIDIA Mellanox
- Part Number: MIS5023Q-1BFR
- ASIC: InfiniScale IV
- Type: Unmanaged InfiniBand Switch
- Ports: 18x QSFP (QDR 40Gb/s)
- Aggregate Bandwidth: 1.44 Tb/s
- Latency: ~200ns
- Management: Unmanaged
- Power Supply: 1x PSU
- Airflow: P2C
- Form Factor: 1U
- Condition: Refurbished
Compatibility & Hard Constraints
InfiniBand Only. QDR maximum. Not compatible with FDR/EDR/HDR/NDR. QSFP ports only (not QSFP28/56/OSFP). Unmanaged: external SM required. Single PSU. Larger: MIS5024Q-1BFR (36-port).
Why Choose T.E.S IT-SOLUTIONS
T.E.S IT-SOLUTIONS tests every refurbished switch for port functionality, PSU, fan health, and firmware integrity. Global shipping, 1–3 day handling.