In a multi-switch fabric where it is necessary to manually map out preferred paths based on application priority and topology, while still allowing failover to non-preferred paths if needed, Traffic Isolation Zones (TIZs) are the recommended functionality. TIZs provide a mechanism to segregate and control traffic within a Fibre Channel (FC) fabric, ensuring that specific application traffic follows the preferred paths while providing the necessary failover capabilities. This enhances the performance and reliability of critical applications by keeping their traffic on dedicated paths, reducing the risk of congestion and ensuring that failover paths are used only when necessary.
For more details, refer to the following HPE Storage references:
HPE B-series FC Switches