Fibre Channel port numbers: 2145-DH8

The Fibre Channel port numbers of a SAN Volume Controller 2145-DH8 node, as seen in the management GUI, depend on several factors. These factors include the number of Fibre Channel (FC) adapters that are fitted in the node, the PCIe expansion slots in which an FC adapter is fitted, and the number of ports on each FC adapter.

SAN Volume Controller 2145-DH8 nodes support the following types of Fibre Channel adapters:
  • 4-port 8 Gbps
  • 2-port 16 Gbps
  • 4-port 16 Gbps
  • 4-port 10 Gbps Ethernet, which is used for Fibre Channel over Ethernet (FCoE) communications

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
SAN Volume Controller 2145-DH8 node that is 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
SAN Volume Controller 2145-DH8 node that is 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
SAN Volume Controller 2145-DH8 that is fitted with a 10 Gbps Ethernet adapter in slot 2

Standard mode WWPN

In standard mode, the 2145-DH8 node uses the worldwide node name (WWNN) that was assigned during the manufacturing process. The WWNN has the following format, where xxxx is a unique number that was assigned when the node was manufactured: 
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.
Table 1. Example: port numbers and standard mode WWPN values (all slots fitted with FC adapters)
PCI slot number Adapter I/O port number Adapter port ID Physical WWPN NPIV WWPN
1 1 1 500507680c11xxxx 500507680140xxxx
2 2 500507680c12xxxx 500507680130xxxx
3 3 500507680c13xxxx 500507680110xxxx
4 4 500507680c14xxxx 500507680120xxxx
2 5 1 500507680c21xxxx 500507680150xxxx
6 2 500507680c22xxxx 500507680160xxxx
7 3 500507680c23xxxx 500507680170xxxx
8 4 500507680c24xxxx 500507680180xxxx
3 9 1 500507680c31xxxx 500507680190xxxx
10 2 500507680c32xxxx 5005076801a0xxxx
11 3 500507680133xxxx 5005076801b0xxxx
12 4 500507680134xxxx 5005076801c0xxxx
5 13 1 500507680c51xxxx 500507680158xxxx
14 2 500507680c52xxxx 500507680168xxxx
15 3 500507680c53xxxx 500507680178xxxx
16 4 500507680c54xxxx 500507680188xxxx

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.
Table 2. Example: port numbers and corresponding legacy mode WWPN values (all slots fitted with FC adapters)
PCI slot number Adapter I/O port number Adapter port number WWPN
1 1 1 500507680140xxxx
2 2 500507680130xxxx
3 3 500507680110xxxx
4 4 500507680120xxxx
2 5 1 500507680150xxxx
6 2 500507680160xxxx
7 3 500507680170xxxx
8 4 500507680180xxxx
3 9 1 500507680190xxxx
10 2 5005076801a0xxxx
11 3 5005076801b0xxxx
12 4 5005076801c0xxxx
5 13 1 500507680158xxxx
14 2 500507680168xxxx
15 3 500507680178xxxx
16 4 500507680188xxxx