According toFLDTEC documentation and Cisco UCS architecture guides, each of these elements plays a distinct and essential role:
Fabric Interconnects (FI)– Act as the central switching and management point for the UCS domain, connecting servers to LAN and SAN.
Virtual Interface Cards (VICs)– Installed in servers, these adapters supportvirtualization of multiple NICs and HBAs, enabling dynamic profile assignment.
Fabric Extenders (FEXs)– Extend the I/O fabric from the FI to the chassis, reducing complexity and consolidating management.
Servers– Provide the actual compute resources and run workloads. These can bebladeorrack servershoused in the UCS chassis.
This structure is critical to theCisco Unified Fabric approach, which simplifies data center management through integration and automation.
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