Arista DCS-7508E-FM | 7500E Fabric Module, Hot-Swappable, 155W, 5+1 Redundancy

Q: How many DCS-7508E-FM modules are required for a 7508E chassis?
A: The DCS-7508E chassis has six fabric slots. For full redundancy and optimal performance, all six fabric modules should be populated. The modules support N+1 redundancy, meaning the chassis can operate with one module failure without performance loss.

Q: Can I hot-swap the DCS-7508E-FM module during operation?
A: Yes, the DCS-7508E-FM is fully hot-swappable with zero performance degradation. The active-active fabric architecture ensures continuous operation during module replacement, making it ideal for data centers requiring 24/7 uptime.

Q: Is the DCS-7508E-FM compatible with the DCS-7504E chassis?
A: No, the DCS-7508E-FM is designed exclusively for the DCS-7508E chassis. The smaller DCS-7504E chassis requires the DCS-7504E-FM fabric module, which has different dimensions and power specifications.

Q: What is included with the DCS-7508E-FM module?
A: The DCS-7508E-FM is a complete fabric module with integrated fan system. It provides both fabric connectivity and cooling in a single hot-swappable unit, eliminating the need for separate fan trays in the fabric slots.

Q: What power supply is recommended for a fully populated 7508E chassis?
A: Arista recommends the PWR-2900AC power supplies for the 7500E series. The chassis supports four 2900W AC power supplies in a 2+2 grid redundant configuration, providing sufficient capacity for two supervisors, eight line cards, and six fabric modules.