NVIDIA Mellanox MSX6025F-1BRS SwitchX FDR InfiniBand Externally-Managed Switch, 36 QSFP+ Ports, 1U: This is a 1U 36-port QSFP+ externally-managed (unmanaged from the front-panel CLI perspective) InfiniBand switch built on the SwitchX silicon platform, supporting non-blocking FDR (56Gb/s) port speeds. The 1BRS suffix indicates one PSU, basic/unmanaged (B), short depth (R), and standard airflow (S, connector side to PSU side). The switch requires an external subnet manager. This is a refurbished unit.
Engineering Context
The MSX6025F provides full bisectional bandwidth across all 36 ports for an aggregate switching capacity of 4.032Tb/s. Per-port latency is in the low-hundreds of nanoseconds, typical of single-chip FDR switches. Compared to the MSX6036F managed variant, the MSX6025 is the externally-managed line and does not run an embedded subnet manager — opensm or Mellanox UFM must run on the fabric. Power draw is on the order of ~120W typical for a single PSU configuration. Short-depth chassis fits in shallower telco-style racks where standard-depth switches will not.
Deployment & Use Cases
Top-of-Rack InfiniBand aggregation in HPC clusters where opensm runs on a head node. Storage interconnects for parallel filesystems (Lustre, GPFS) running over IB FDR. Short-depth racks (telco/edge colocation) where chassis depth is constrained. Cost-effective fabric expansion when the SM is already provided elsewhere in the cluster.
Technical Specifications
OEM: NVIDIA Mellanox
Part Number: MSX6025F-1BRS
Form Factor: 1U Rackmount, short depth
Ports: 36 x QSFP+
Port Speed: FDR 56Gb/s (4x14G NRZ) per port
Switching Capacity: 4.032Tb/s aggregate
Management: Externally-managed — requires opensm or UFM
Protocol: InfiniBand FDR (back-compatible to QDR/DDR)
Power Supplies: 1 x AC PSU (single PSU configuration)
Airflow: Standard — connector side to PSU side
Chassis Depth: Short depth
Condition: Refurbished — Tested by T.E.S IT-SOLUTIONS
Compatibility & Hard Constraints
Compatible with Mellanox QSFP/QSFP+ DAC, AOC, and FDR optical transceivers. Pairs with ConnectX-3, ConnectX-3 Pro, and ConnectX-4 IB HCAs. Single PSU configuration: there is no internal redundancy — for redundant power, source a 2-PSU model (MSX6025F-2BRS) or deploy a separate UPS. Standard airflow (connector-to-PSU) must match your hot/cold aisle layout — do not mix airflow directions in the same enclosure. Not Ethernet-capable in this SKU; this is an InfiniBand-only switch. An external subnet manager (opensm or UFM) is mandatory for fabric operation.
Why Choose T.E.S IT-SOLUTIONS
T.E.S IT-SOLUTIONS power-tests every switch and verifies all 36 ports for link-up at FDR rate against a known-good external SM before shipment. 1–3 business day handling, global shipping, and post-sale technical support. Visit tes-itsolutions.com.