Hp Array Controller HSG V8.7 Software Manual do Utilizador Página 104

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326 HSG80 Users Guide
Controller and Port Worldwide Names (Node IDs)
A worldwide name (node ID) is a unique 64-bit number assigned to a
subsystem by the Institute of Electrical and Electronics Engineers
(IEEE) and set by DIGITAL manufacturing prior to shipping. The
worldwide name assigned to a subsystem never changes.
Each subsystems worldwide name ends in zero, for example
5000-1FE1-FF0C-EE00. The controller port ID numbers are derived
from the worldwide name. In a subsystem with two controllers (a dual-
redundant configuration) the port ID of Port 1 for both controllers is the
worldwide ID plus 1. In this example, both controllers Port 1 port ID
would be 5000-1FE1-FF0C-EE01. Similarly, both controllers would
have the same port ID for Port 2, 5000-1FE1-FF0C-EE02. The
controllers automatically assign their port IDs.
Use the CLI command SHOW THIS_CONTROLLER to display the
subsytems worldwide name. See Appendix B, CLI Commands, for
more information about the SHOW command and worldwide names.
The CLI uses the term node ID for worldwide names. When you enter
the SHOW command, the subsystem worldwide name (node ID)
displays as the REPORTED NODEID and will look like the following:
5000-1FE1-FF0C-EE00
Restoring Worldwide Names (Node IDs)
When you remove a controller to replace it in a dual-redundant
configuration, the remaining controller remembers the subsystem
worldwide name (node ID). When you install the replacement
controller, the remaining controller tells the new controller the
worldwide name; the replacement controller assumes the correct port
ID numbers.
If you have a single controller configuration, you must have a save
configuration disk if you want to be able to automatically restore the
worldwide name in the event of a failure. In this case the controller
could read the worldwide name from the save configuration disk.
If a situation occurs that requires you to restore the worldwide name,
you can restore it using the worldwide name and check sum printed on
the sticker on the frame into which your controller is inserted. See the
SET controller command in Appendix B, CLI Commands, for details
about setting the worldwide name (node ID).
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