Fibre Channel port numbers: 2145-DH8

Different types of FC adapters can be installed on the system at the same time. For example, the system can be configured with a combination of 2-port 16 Gbps FC adapters, 4-port 8 Gbps FC adapters, and 4-port 16 Gbps FC adapters.

Each Fibre Channel adapter has either two or four ports. To identify the Fibre Channel port numbers, look at the back of the SAN Volume Controller 2145-DH8 node. The Fibre Channel port numbers are identified by counting from the left to the right on the first PCIe expansion slot that is fitted with an FC adapter. The FC port numbers then continue from left to right on to the next PCIe slot that is fitted with an FC adapter.

The following section shows various FC adapter configurations and port numbers, as viewed from the rear of the SAN Volume Controller 2145-DH8 node. The port numbers and PCIe slots are identified by callouts within each figure. To view information about the FC ports on your system, use the management GUI or the lsportfc command.

Examples of FC adapter configurations

Figure 1 shows a SAN Volume Controller 2145-DH8 node that is fitted with 2-port 16 Gbps Fibre Channel adapters (port numbers 1-8).

Figure 1. SAN Volume Controller 2145-DH8 node fitted with 2-port 16 Gbps Fibre Channel adapters

Figure 2 is an example of a SAN Volume Controller 2145-DH8 node that is fitted with 4-port 16 Gbps Fibre Channel adapters (port numbers 1-16). The SAN Volume Controller 2145-DH8 system also supports 4-port 8 Gbps Fibre Channel adapters in slots 1, 2, 3, and 5.

Figure 2. SAN Volume Controller 2145-DH8 node fitted with 4-port 16 Gbps Fibre Channel adapters

In Figure 3, the SAN Volume Controller 2145-DH8 configuration includes a 10 Gbps Ethernet adapter. In this example, the PCIe expansion slots have the following configuration:

• Slot 1 is fitted with a 4-port 8 Gbps FC adapter (port numbers 1-4).
• Slot 2 is fitted with a 4-port 10 Gbps Ethernet adapter (port numbers 5-8); this adapter provides FC ports that can be used for FCoE communications.
• Slot 3 is fitted with a 4-port 12 Gbps SAS adapter (use the lsportsas command to view SAS information).

Figure 3. SAN Volume Controller 2145-DH8 node fitted with an 8 Gbps and a 10 Gbps Ethernet adapter

Standard mode WWPN

500507680c00xxxx

The worldwide port names (WWPNs) are derived from the WWNN of the node in which the ports are installed. The WWPNs are also derived from the slots in which the adapters are fitted. For example, Table 1 summarizes the port numbers and corresponding WWPN values when all four PCI slots are fitted with an FC adapter.

Legacy mode WWPN

In legacy mode, the 2145-DH8 node uses a WWNN value (5005076801) that was previously assigned to an earlier generation node (for example, a 2145-CG8 node).

The WWPNs are derived from the WWNN of the node in which the ports are installed. The WWPN values are also determined by the slots in which the FC adapters are fitted. As an example, Table 2 summarizes the legacy mode WWPN values when all four PCI slots are fitted with an FC adapter. In the table, xxxx represents a unique number that is assigned to the hardware during the manufacturing process.