Arista DCS-7358X4-SC-F | 7358X4 Modular Switch Card, 12.8 Tbps, Front-to-Rear

Q: What chassis is the DCS-7358X4-SC-F compatible with?
A: The DCS-7358X4-SC-F switch card is designed specifically for the Arista 7368 chassis. It connects to 8 I/O module slots and delivers 3.2 Tbps of capacity to each slot, providing a total system capacity of 12.8 Tbps.

Q: What is the difference between the 7358X4 and 7368X4 switch cards?
A: The 7358X4 features a higher-capacity packet buffer (132 MB vs 64 MB), slightly different latency characteristics (900ns vs 700ns), and a forwarding rate of 5.3 Bpps compared to 8 Bpps on the 7368X4. Both share many I/O modules and fit the same 7368 chassis for easy migration.

Q: What does the '-F' suffix indicate in the part number?
A: The '-F' suffix indicates front-to-rear airflow direction (port side to fan side). This is critical for data center cooling design and must match the airflow direction of your chassis power supplies and fan trays to ensure proper thermal management.

Q: Can the switch card be replaced without disrupting network cabling?
A: Yes, the DCS-7358X4-SC-F is rear-removable and field-replaceable without disrupting interface modules or network cabling on the front of the chassis. All active components are hot-swappable for simplified maintenance.

Q: What use cases is the 7358X4 series optimized for?
A: The 7358X4 is optimized for enterprise data centers, hyperscale cloud networks, high-performance computing (HPC), artificial intelligence, and machine learning workloads. It serves well in both leaf and spine topologies requiring high-density 100G and 400G connectivity with consistent low latency.