NVIDIA Mellanox MSX6536-10R 648-Port FDR InfiniBand Modular Chassis (29U): This is a refurbished 29U modular InfiniBand chassis from the Mellanox SX6500 family, identified by MPN MSX6536-10R and shipped with 8 fan units and 10 power supplies in N+2 redundant configuration. This is a high-density chassis platform that scales to 648 FDR (56 Gb/s) external ports through hot-swap leaf and spine cards, not a fixed top-of-rack switch. The unit is sold in refurbished condition, professionally tested by TES technicians and verified in working order.
Engineering Context: The MSX6536-10R is built on Mellanox 5th-generation SwitchX silicon, providing FDR InfiniBand line rate of 56 Gb/s per port (4 x 14 Gb/s lanes). Internally the chassis is a Clos fabric of leaf modules (such as MSX6001FR, 18-port FDR each) and spine modules (such as MSX6002FLR, 36-port FDR14). With every spine slot populated, the chassis delivers non-blocking 1:1 bandwidth across all 648 external QSFP+ ports. The 10-PSU N+2 power configuration and 8-fan thermal design target continuous operation in enterprise data-center and HPC environments.
Deployment & Use Cases: Used as a core fabric switch for very large HPC clusters; aggregation tier for multi-rack GPU and CPU compute farms running MPI workloads (Open MPI, MVAPICH2, Intel MPI); consolidated InfiniBand backbone for parallel storage systems including Lustre, IBM Spectrum Scale (GPFS), and BeeGFS; high-density edge in research, weather, and life-sciences computing centers.
Technical Specifications:
- Product family: NVIDIA Mellanox SX6500 modular InfiniBand chassis
- MPN: MSX6536-10R
- Form factor: 29U modular chassis
- Maximum external ports: 648 FDR
- Per-port data rate: 56 Gb/s (FDR InfiniBand)
- Power supplies installed: 10 (N+2 redundant)
- Fans installed: 8
- External connector type: QSFP+
- Switch silicon: Mellanox SwitchX (5th generation)
- Architecture: Leaf/spine Clos fabric
- Compliance: RoHS-6
- Condition: Refurbished, professionally tested
Compatibility & Constraints: Compatible with Mellanox FDR HCAs (ConnectX-3 / ConnectX-3 Pro VPI), Mellanox MSX6001FR leaf modules and MSX6002FLR spine modules, and FDR-rated QSFP+ DAC and AOC cables. Not compatible with EDR (100 Gb/s) or HDR (200 Gb/s) only HBAs and not capable of 100G / 200G / 400G line rates. Non-blocking 1:1 operation requires all spine slots populated. Verify rack space and power capacity for the 29U form factor and the 10-PSU input requirement before deployment.
Why TES IT-Solutions: TES specializes in refurbished NVIDIA Mellanox enterprise networking. Each unit is professionally tested by experienced technicians with documented full working order. Standard handling time is 1-3 business days. Visit TES IT-Solutions.

