NVIDIA Mellanox MTDF-FAN-B Director Chassis Spine-Side Fan Unit: This is a hot-swappable fan tray ("B" position, spine-side of the chassis) designed as a field-replaceable unit (FRU) for NVIDIA Mellanox director-class InfiniBand chassis switches. The MTDF-FAN-B installs into a dedicated fan slot on the spine side of the system to maintain front-to-back airflow across the line cards and switching fabric. This is a chassis fan FRU, not a power supply, not a line card, and not a complete cooling system. This is a refurbished unit.
Engineering Context
Director-class InfiniBand chassis (such as the CS7500 family and related Mellanox director platforms) rely on multiple distributed fan units to push high-volume airflow through dense leaf and spine line cards. The "B" designation indicates the spine-side mounting position; the matching "A" unit covers the leaf side of the chassis. Each fan tray is hot-swappable, allowing online replacement without taking the fabric down, provided remaining fan units in the chassis can sustain thermal load during the swap window. Fan speed is managed by the chassis controller and adapts to inlet temperature and load.
Deployment & Use Cases
Spare or replacement fan unit for production director-class InfiniBand chassis. Pre-staged spares for HPC sites running 24/7 fabrics. Refresh of aging fan trays in long-running clusters where original fans are approaching end-of-service. Lab and integration spares for fabric build-out engineers.
Technical Specifications
OEM: NVIDIA Mellanox
Part Number: MTDF-FAN-B
Component Type: Field-replaceable fan tray (FRU)
Chassis Position: Spine-side ("B" position)
Hot-Swap: Yes
Airflow Direction: Front-to-back (verify against your specific chassis SKU)
Power: Drawn from chassis backplane (no external connector)
Form Factor: Mellanox director-chassis fan slot
Condition: Refurbished — Tested by T.E.S IT-SOLUTIONS
Compatibility & Hard Constraints
Designed for the spine-side fan slot of NVIDIA Mellanox director-class InfiniBand chassis that specify the MTDF-FAN family. Verify exact chassis model and slot designation against the chassis FRU manual before ordering, since the "A" and "B" units are not interchangeable in their respective slots. Not a generic 1U server fan and not compatible with fixed-form-factor edge switches. Does not include rack rails, cabling, or chassis controllers; this is the fan tray only.
Why Choose T.E.S IT-SOLUTIONS
T.E.S IT-SOLUTIONS power-tests every refurbished fan tray for spin-up, RPM stability, and connector seating before shipment. Visit www.tes-itsolutions.com for inventory and bulk-quote requests. Standard handling time is 1 to 3 business days.