Arista DCS-7508E-FM 7500E Series Fabric-E Integrated Switch Fan Tray

The DCS-7508E-FM is the Fabric-E module for the Arista 7508E chassis. It is a fabric module with integrated fans, so the six modules in fabric slots 1 to 6 handle both switching between line cards and cooling for the chassis.

Six are required, and the fans provide 5+1 redundancy, so the chassis stays cooled if one module's fans fail. This module fits the 7508E only; the four-slot 7504E uses the DCS-7504E-FM instead.

Airflow follows the chassis path, front-to-back (port-side intake), per the 7500 Quick Start Guide. Power supplies in the chassis should move air the same way, and the chassis should sit with the line card ports facing the cold aisle.

Power draw is 155W typical and 195W maximum per module, and each module weighs 10 lb. Six modules add close to 1 kW of typical load, so include them when sizing chassis power. The Fabric-E modules support 7500E line cards such as the 36Q, 48S and 12CQ.

Because the module is hot-swappable, you can replace a failed fan without powering the switch down. Swap one module at a time so the remaining fans keep cooling the system.

For the rest of the chassis build, NetworkTigers also lists the DCS-7500E-12CQ-LC line card and the DCS-7500E-48S-LC line card.

This seller refurbished DCS-7508E-FM is tested, working, and covered by the NetworkTigers one-year warranty.