When connecting a host from one fabric to a storage subsystem on another fabric, which of the following must be used to prevent the fabrics from merging?

A CNA (Converged Network Adapter) combines the functionality of an HBA and a Network Interface Card (NIC), connecting a server to both Fibre Channel and Ethernet networks, but it doesn't separate or route between FC fabrics.

A Fibre Channel router is specifically designed to route traffic between distinct Fibre Channel fabrics while maintaining their separation, preventing fabric merge operations, and allowing selective access. This is crucial for security and fault isolation.

VSAIMs is not a standard, recognized term or technology for Fibre Channel networking or fabric separation; it appears to be a distracter.

Dual ports provide redundancy for a single connection but do not facilitate communication between separate fabrics without merging them.