You use the USB-Key  InitTool  to set up the cluster IP address. You must set the two service  IP addresses after the system is installed. Record the cluster and service IP address settings  for the storage enclosure in Table 3-3. Table 3-3 IP addresses for the storage enclosure Cluster name: Cluster IP address: IP: Subnet mask: Gateway: Service IP address 1: IP: Subnet mask: Gateway: Service IP address 2: IP: Subnet mask: Gateway: 3.2.2 Interface card connections This section describes the information that is needed for various interface card connections  and for the connection switches. Important:  Each host must be connected to both canisters to add redundancy and  improve performance. If a host is not connected to both canisters, its state shows as  degraded. Each canister supports the following optional Fibre Channel (FC) interface cards: Important:  Small form-factor pluggable (SFP) transceivers must be obtained and deployed  in pairs to support multipathing. In order to use FC-NVMe make sure your SAN infrastructure is supporting this protocol. For a more detailed description of the options on interface cards and optics, see Chapter 5,  “Non Volatile Memory express” on page 133. Fibre Channel GLYPH<SM590000> 16 Gb FC cards supporting either two 16 Gb FC optics in the two leftmost ports on the  card (ports 1 and 2 in Table 3-4 on page 79) or four 8 Gb FC optics/ports GLYPH<SM590000> 16 Gb FC-NVMe cards supporting four 16 Gb FC optics/ports 78  Implementing IBM FlashSystem 900 Model AE3