Figure 7-102 Manage Host Ports Figure 7-103 Manage host ports for host Exchange01 to remove ports Figure 7-104 Host now features only a single WWPN port that is configured Chapter 7. Using IBM FlashSystem 900  243 Under normal conditions, any configured host features at least two configured host ports for  redundancy. However, you might have reasons for unassigning a host port, as demonstrated  in this example. One reason might be that if an HBA for a host is replaced, SAN zoning and  storage systems must be reconfigured for the new host WWPN. After the host port is unassigned, click  Close  to return to the Hosts view (see Figure 7-104),  which shows that the  Exchange01  host is Online and only a single port is active. In this example, you want to remove host ports. Therefore, select one of the  Exchange01  host  ports and click  Actions  Unassign Host Port  (see Figure 7-103).