Fibre Channel port numbers: 2145-SV1

The Fibre Channel port numbers of a SAN Volume Controller 2145-SV1 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-SV1 nodes support the following types of Fibre Channel adapters:
  • 4-port 16 Gbps
  • 4-port 10 Gbps Ethernet, which is used for Fibre Channel over Ethernet (FCoE) communications

The adapters can be installed in slots 3, 4, 6, or 7, as shown in Table 1.

Table 1. PCI adapter slots for 2145-SV1 nodes
Slot 1: Not used Slot 3: 4-port 16 Gbps FC or 10 Gbps Ethernet or 2-port 25 Gbps Ethernet Slot 6: 4-port 16 Gbps FC or 10 Gbps Ethernet or 2-port 25 Gbps Ethernet
Slot 2: 12 Gbps SAS only Slot 4: 4-port 16 Gbps FC or 10 Gbps Ethernet or 2-port 25 Gbps Ethernet Slot 7: 4-port 16 Gbps FC or 10 Gbps Ethernet or 2-port 25 Gbps Ethernet
Not used Slot 5: 12 Gbps SAS or compression accelerator only Slot 8: Compression accelerator only

To view information about the FC ports on your system, use the management GUI or enter the lsportfc command.

Standard mode

In standard mode, the 2145-SV1 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. 
500507680f00xxxx

The worldwide port names (WWPNs) are derived from the WWNN of the node in which the ports are installed. The WWPNs are directly related to the FC I/O port IDs, rather than the physical location of the port. The I/O port IDs and WWPNs values are fixed, while the slot and adapter port ID depend on the mapping set by the user (or the default). Each Fibre Channel I/O port ID can be assigned to any Fibre Channel or Fibre Channel over Ethernet port by entering the satask chvp -fcportmap command.

Table 2 shows the default assignments. The default mapping assumes that the FC and FCoE adapters are installed in ascending PCI slot order without leaving gaps between supported slots. If adapters are not installed in this configuration, you can change the assignment by entering the satask chvp -fcportmap command.
Table 2. Default port mapping on 2145-SV1 nodes
Fixed port values Default 2145-SV1 mapping
FC IO port ID Physical WWPN NPIV WWPN PCI slot Adapter port ID
1 500507680f01xxxx 500507680f81xxxx 3 1
2 500507680f02xxxx 500507680f82xxxx 3 2
3 500507680f03xxxx 500507680f83xxxx 3 3
4 500507680f04xxxx 500507680f84xxxx 3 4
5 500507680f05xxxx 500507680f85xxxx 4 1
6 500507680f06xxxx 500507680f86xxxx 4 2
7 500507680f07xxxx 500507680f87xxxx 4 3
8 500507680f08xxxx 500507680f88xxxx 4 4
9 500507680f09xxxx 500507680f89xxxx 6 1
10 500507680f0axxxx 500507680f8axxxx 6 2
11 500507680f0bxxxx 500507680f8bxxxx 6 3
12 500507680f0cxxxx 500507680f8cxxxx 6 4
13 500507680f0dxxxx 500507680f8dxxxx 7 1
14 500507680f0exxxx 500507680f8exxxx 7 2
15 500507680f0fxxxx 500507680f8fxxxx 7 3
16 500507680f10xxxx 500507680f90xxxx 7 4

Legacy mode

In legacy mode, the 2145-SV1 node uses a WWNN value that was previously assigned to an earlier generation node. The system maps the ports so that they have the same FC I/O port IDs and WWPNs as the original node. Table 3 summarizes the range of WWNN legacy mode values. If the WWNN value of your node does not fall within one of these ranges, contact your service representative.

Table 3. Summary of WWNN ranges for SAN Volume Controller nodes
Node WWNN WWNN range
2145-CG8 , 2145-CF8, or 2145-DH8 (legacy mode) 50050768010xxxxx 5005076801000000 - 500507680101FFFF
2145-DH8 (standard mode) 500507680c00xxxx 500507680C000000 - 500507680C00FFFF

Restrictions for port mapping

If you are completing a nondisruptive hardware upgrade with a 2145-SV1 node, you might need to map ports. In most system upgrades, the default port mapping is suitable. However, there are a few exceptions with 2145-DH8 configurations. For example, special mapping might be needed if adapter slot 5 is used and slot 3 does not contain an adapter or if the 2145-DH8 node uses 2-port FC adapters.