NVIDIA Mellanox MSX6025F-1BFR SwitchX-2 36-Port FDR 56Gb/s InfiniBand Switch, 1U Short Depth, Unmanaged: This is a 1U unmanaged InfiniBand switch built on the SwitchX-2 ASIC, providing 36 non-blocking QSFP+ ports running at FDR 56Gb/s per port. Airflow is PSU-side intake to connector-side exhaust (P2C). This is an unmanaged externally-managed unit, not a self-managed switch with onboard MLNX-OS subnet manager. This is a refurbished unit.
Engineering Context
The MSX6025F-1BFR delivers up to 4.032 Tb/s aggregate non-blocking bandwidth across 36 QSFP+ ports at FDR 56Gb/s. Port-to-port latency is approximately 170 nanoseconds, suitable for tightly-coupled HPC fabrics. The short-depth 1U chassis fits in shallow racks where standard switches do not. Single AC power supply (no redundancy in this model). FDR ports auto-negotiate to QDR 40Gb/s, DDR 20Gb/s, and SDR 10Gb/s for backward compatibility with legacy InfiniBand endpoints.
Deployment & Use Cases
Top-of-Rack leaf switch in HPC clusters running MPI workloads (LAMMPS, GROMACS, OpenFOAM). Aggregation in CFD and weather simulation clusters where 56Gb/s lanes are required. Storage fabric backbone for IBM Spectrum Scale (GPFS) and Lustre parallel filesystems. Externally managed fabrics where a separate subnet manager runs on a dedicated host or another switch in the topology.
Technical Specifications
OEM: NVIDIA Mellanox
Part Number: MSX6025F-1BFR
Switch ASIC: SwitchX-2
Ports: 36 x QSFP+ FDR (non-blocking)
Per-Port Speed: 56Gb/s FDR (auto-neg to QDR/DDR/SDR)
Aggregate Bandwidth: 4.032 Tb/s
Port-to-Port Latency: ~170 ns
Form Factor: 1U Short Depth
Power Supply: 1 x AC (non-redundant)
Airflow: P2C (PSU-side intake to connector-side exhaust)
Management: Unmanaged (externally managed via separate subnet manager)
Condition: Refurbished — Tested by T.E.S IT-SOLUTIONS
Compatibility & Hard Constraints
Compatible with NVIDIA Mellanox ConnectX-3, ConnectX-3 Pro, ConnectX-4, ConnectX-5, and ConnectX-6 InfiniBand adapters operating at FDR or below. Requires an external subnet manager (OpenSM running on a host, or a managed switch elsewhere in the fabric). Not suitable as a standalone fabric without a subnet manager. Not an Ethernet switch and does not support EN-only adapter modes. Does not support EDR (100Gb/s) or HDR (200Gb/s) speeds; FDR is the maximum. Single PSU means no power redundancy — pair with a UPS for production deployments.
Why Choose T.E.S IT-SOLUTIONS
T.E.S IT-SOLUTIONS performs functional testing of every port on this switch with FDR-rated cabling and verifies the management interface, fan speeds, and PSU output before shipment. We provide expert consultation on InfiniBand fabric topology design, subnet manager placement, and global shipping with comprehensive warranty. Visit tes-itsolutions.com. Handling time 1-3 business days.