Technical data

1–28 HSG80 ACS Solution Software Version 8.6 for Compaq Tru64 UNIX Installation and Configuration Guide
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
In multiple-bus failover mode, each of the host ports has its own port ID:
■ Controller B, port 1—worldwide name + 1, for example 5000-1FE1-FF0C-EE01
■ Controller B, port 2—worldwide name + 2, for example 5000-1FE1-FF0C-EE02
■ Controller A, port 1—worldwide name + 3, for example 5000-1FE1-FF0C-EE03
■ Controller A, port 2—worldwide name + 4, for example 5000-1FE1-FF0C-EE04
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.