In a Stretched MetroCluster configuration the use of an FC-VI card for the HA Interconnect is mandatory. Note: For more details on which platforms a specific FC-VI card is support please refer to the ...In a Stretched MetroCluster configuration the use of an FC-VI card for the HA Interconnect is mandatory. Note: For more details on which platforms a specific FC-VI card is support please refer to the HardWareUniverse (HWU) By default, the FC-VI card connects at the highest common speed of both cards. However, to achieve longer distances, the connecting speed of the FC-VI card might have to be set to speeds lower than the maximum speed supported by the card.