Fault tolerant design allows a host to overcome a single HBA failure through:

Clustering provides high availability for services and applications. If an HBA fails on one host within a cluster, the cluster can automatically failover and migrate the affected virtual machines or applications to another healthy host, ensuring continued service access to storage.

UTA (Unified Target Adapter) pairing is a feature of certain storage arrays or converged network adapters, not a direct host-level mechanism for overcoming HBA failure in a fault-tolerant design.

Multipathing is a direct method for a single host to maintain storage connectivity by using redundant paths if one HBA fails, but clustering provides a broader fault-tolerant design by enabling workload failover to entirely different hosts.

NIC teaming aggregates network interface cards for network redundancy and load balancing, which is unrelated to storage connectivity provided by HBAs.