NVIDIA Mellanox MIS5030Q-2BRC InfiniScale IV QDR Managed InfiniBand Switch, 36-Port QSFP, Chassis Manager, 2 Redundant PSUs: This is a fixed-configuration 36-port QDR (40Gb/s) InfiniBand spine/leaf switch built around the InfiniScale IV ASIC and equipped with an on-board Chassis Manager. The 2BRC variant carries dual power supplies for 1+1 redundancy, runs connector-side-to-PSU-side airflow, and ships with FRU support on PSUs and the fan tray. This is a short-depth 1U rack-mountable enclosure — not an unmanaged 8-port MIS5022Q and not the single-PSU MIS5030Q-1BRC. RoHS-5 compliant. This is a refurbished unit.
Engineering Context
The InfiniScale IV ASIC delivers 2.88Tb/s of aggregate non-blocking switching across the 36 QSFP ports at 40Gb/s QDR each, with sub-100ns port-to-port cut-through latency typical for this generation. The dual-PSU configuration provides 1+1 power redundancy: a single AC feed loss does not bring the chassis down. On-board Chassis Manager handles unit-level telemetry, image upgrades and port LED state — but it is not a Subnet Manager. Fabric routing and partitioning still require an external OpenSM running on a host or a peer switch hosting SM. Recommended over the 1BRC where production fabric uptime is non-negotiable.
Deployment & Use Cases
Production spine or leaf in mid-sized QDR InfiniBand HPC clusters. Storage cluster back-end for Lustre, GPFS, BeeGFS at QDR. Two-tier fat-tree aggregation where leaf nodes need high-availability power. Long-running production research clusters where PSU redundancy is part of the SLA. Replacement chassis for in-place upgrades from 1BRC where redundant power has become a requirement.
Technical Specifications
OEM: Mellanox Technologies (NVIDIA)
Part Number: MIS5030Q-2BRC
Switch ASIC: InfiniScale IV
Ports: 36 x QSFP
Per-Port Speed: 40Gb/s QDR InfiniBand
Aggregate Bandwidth: 2.88Tb/s non-blocking
Management: On-board Chassis Manager (unit-level); external Subnet Manager required for fabric
Power Supplies: 2 (1+1 redundant, FRU)
Airflow: Connector side to PSU side
Form Factor: 1U short-depth rack-mountable
Compliance: RoHS-5
Condition: Refurbished — Tested by T.E.S IT-SOLUTIONS
Compatibility & Hard Constraints
Compatible with any QDR-capable QSFP InfiniBand HCA — ConnectX-2, ConnectX-3 and ConnectX-3 Pro in QDR mode — over QSFP DAC, QSFP AOC or QDR transceivers with multi-mode fibre. Chassis Manager is unit-level only — fabric requires an external Subnet Manager (OpenSM on a host or a peer switch with SM). Both PSUs are required for 1+1 redundancy; running a single PSU loaded leaves the chassis without redundant power. Ports are pure InfiniBand QSFP — not VPI, not Ethernet. Airflow direction is fixed (connector-to-PSU); confirm it matches your data-centre aisle convention.
Why Choose T.E.S IT-SOLUTIONS
Every MIS5030Q-2BRC is bench-tested across all 36 QSFP ports at 40Gb/s QDR, with both PSUs verified independently for 1+1 failover behaviour and Chassis Manager telemetry validated. T.E.S IT-SOLUTIONS provides consultation on redundant-power topology and Subnet Manager placement. Visit tes-itsolutions.com for bulk pricing. 1–3 day handling time with global tracked shipping.