HSG80 ACS Solution Software V8.6 for SGI IRIX Installation and Configuration Guide

Planning a Subsystem 1–19

Worldwide Names (Node IDs and Port IDs)

A worldwide name—also called a node ID—is a unique, 64-bit number assigned to a

subsystem prior to shipping. The node ID belongs to the subsystem itself and never

changes.

Each subsystem’s node ID ends in zero, for example 5000-1FE1-FF0C-EE00. The

controller port IDs are derived from the node ID.

In a subsystem with two controllers in transparent failover mode, the controller port IDs

are incremented as follows:

■ Controller A and controller B, port 1—worldwide name + 1, for example

5000-1FE1-FF0C-EE01

■ Controller A and controller B, port 2—worldwide name + 2, for example

5000-1FE1-FF0C-EE02

Use the CLI command,

SHOW THIS_CONTROLLER/OTHER_CONTROLLER to display the

subsystem’s worldwide name.

Restoring Worldwide Names (Node IDs)

If a situation occurs that requires you to restore the worldwide name, you can restore it

using the worldwide name and checksum printed on the sticker on the frame into which

the controller is inserted.

Figure 1–12 shows the placement of the worldwide name label for the Model 2200

enclosure, and Figure 1–13 for the BA370 enclosure.

Figure 1–12. Placement of the worldwide name label on the Model 2200 enclosure

1 Node ID

(Worldwide name)

2 Checksum

CXO7228A

WWN INFORMATION

P/N:

WWN:

Checksum:

NNNN – NNNN – NNNN – NNNN

S/N: