Which two SAN designs appropriate to support large-scale SAN environments? (Choose two)

The edge-core-edge design extends scalability beyond core-edge by adding a second tier of edge switches that connect to both the core and directly to hosts or storage, allowing very large fabrics with thousands of ports to be built while keeping inter-switch link counts manageable.

Fibre Channel Forwarder (FCF) is a functional role in FCoE networks that bridges Ethernet and Fibre Channel frames, not a SAN topology or design pattern.

Split fabric design partitions a fabric into isolated segments for security or fault isolation purposes and is not a scalability-oriented design for large SAN environments.

The core-edge design uses a two-tier hierarchy where dedicated edge switches aggregate host and storage connections and uplink to a high-speed redundant core layer, providing clear separation between access and backbone tiers and supporting large SAN growth.

Dual fabric design deploys two parallel independent fabrics for path redundancy and high availability, which is a resiliency strategy rather than a scalability design for large-scale SAN growth.