of a failover. Because the ports are not active at the same time, the
AL_PA addresses do not conflict.
Do not make the AL_PA address that is assigned to Port 1 the same as
that assigned to Port 2 because they are distinct devices on the Fibre
Channel loop.
The following example sets the
PORT_
x
_AL_PA
value for ports on two
HSG80 controllers in transparent failover mode:
set this PORT_1_AL_PA
= 01
set this PORT_2_AL_PA
= 02
set other PORT_1_AL_PA
= 01
set other PORT_2_AL_PA
= 02
4.4 Obtaining the Worldwide Names of HSG80 Controllers
A worldwide name is a unique 64-bit number that the Institute of
Electrical and Electronics Engineers (IEEE) assigns to a subsystem and the
manufacturer sets prior to shipping. The worldwide name that is assigned
to a subsystem never changes. Obtain and record the worldwide names
of Fibre Channel components in case you need to verify their target ID
mappings in the operating system.
Each HSG80 controller’s worldwide name ends in 0, for example,
5000-1FE1-FF0C-EE00. The worldwide name (and checksum) of an HSG80
controller (also known as the node name) appears on a sticker placed above
the controllers. You can also use the
SHOW THIS_CONTROLLER
Array
Controller Software (ACS) command to display the worldwide name.
For HSG80 controllers, the controller port IDs are derived from the
worldwide name. In a subsystem with two controllers in transparent failover
mode, the controller port IDs increment as follows:
•
Controller A and controller B, port 1—worldwide name + 1
•
Controller A and controller B, port 2—worldwide name + 2
For example, using the worldwide name of 5000-1FE1-FF0C-EE00, the
following port IDs are automatically assigned and shared between the ports
as a
REPORTED PORT_ID
on each port:
•
Controller A and controller B, port 1— 5000-1FE1-FF0C-EE01
•
Controller A and controller B, port 2— 5000-1FE1-FF0C-EE02
Installing Fibre Channel Hardware and Configuring the emx Driver 4–15
