When using switch zoning in a MetroCluster configuration with array LUNs, you must ensure that certain basic requirements are followed.
Single-initiator to single-target zoning limits each zone to a single FC initiator port and a single target port.
Similarly, sharing of multiple target ports with a single initiator port can cause performance issues.
Being able to share a given FC initiator port or target ports is useful for organizations that want to minimize the number of initiator or target ports used. For example, an organization that expects low I/O usage over an FC initiator port or target ports might prefer to share FC initiator port or target ports instead of dedicating each FC initiator port to a single target port.
However sharing of initiator or target ports can adversely affect performance.