Arista DCS-7504R3-FM | 7500R3 Fabric Module for 7504N Chassis, Integrated Fan

Q: How many fabric modules are required for the DCS-7504N chassis?
A: The 7504N chassis requires fabric modules for slots 1-6. While the system can operate with fewer modules, six modules are recommended for full bandwidth and N+1 redundancy. Each module provides 3.2 Tbps of fabric bandwidth per line card slot.

Q: Can the DCS-7504R3-FM be hot-swapped?
A: Yes, the fabric module is fully hot-swappable with zero performance degradation. The 7500R3 architecture operates all fabric modules in active-active mode, so removing or replacing a module has no impact on system performance when six modules are installed.

Q: Is the DCS-7504R3-FM compatible with older 7500R chassis?
A: Yes, Arista designed the 7500R3 Series with backward compatibility. Existing chassis, power supplies, fans, and fabric modules can be used alongside newer 7500R3 Series line cards, providing investment protection for existing deployments.

Q: What is included with the fabric module?
A: The DCS-7504R3-FM is a fabric module with an integrated fan assembly. The fan module provides dynamic temperature control with N+1 redundancy and supports front-to-rear airflow optimized for data center environments.

Q: What happens if a fabric module fails?
A: The 7500R3 architecture provides N+1 fabric module redundancy with graceful degradation. If one fabric module fails, the remaining modules continue to operate in active-active mode with zero packet loss, ensuring continuous service availability.