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or wwidmgr -set command. In this example, none of the wwidn
environment variables is set.
4. Look through the wwidmgr -show wwid display (see Example 6–4)
and locate the UDID for the Tru64 UNIX disk (133) and each member
system boot disks (131, 132) to ensure the storage unit is seen. As a
second check, compare the worldwide name values.
5. Use the wwidmgr command with the -quickset option to set a device
unit number for the Tru64 UNIX Version 5.1 installation disk and the
first cluster member system boot disk.
Example 6–5 shows the use of the wwidmgr command with the
-quickset option to define a device unit number, based on the UDID,
as an alias for the worldwide name for the Tru64 UNIX installation
disk and the first cluster member system boot disk. The wwidmgr
-quickset utility sets the device unit number and also provides a
display of the device names and how the disk is reachable (reachability
display).
The wwidmgr -quickset command generates multiple device unit
numbers based on the UDID. The device unit number is an alias for the
worldwide name, in a format the console can use to identify storage unit.
The wwidmgr -quickset command may generate multiple device
names for a given device unit number because each possible path to a
storage unit is given its own device name.
Example 6–5 shows:
• The use of the wwidmgr -quickset command to set the device unit
number for the Tru64 UNIX Version 5.1 installation disk to 133, and
the first cluster member system boot disk to 131.
• The wwidmgr -quickset command provides a reachability display
equivalent to execution of the wwidmgr reachability command.
The reachability part of the display provides the following:
– The worldwide name for the storage unit that is to be accessed.
– The new device name for the storage unit.
– The KGPSA adapters through which a connection to the storage
unit is potentially available.
– The WWID of the HSG80 port(s) (N_Ports) that will be used to
access the storage unit.
– The connected column indicates whether the storage unit is
currently available through the KGPSA to HSG80 controller port
connection. The HSG80 controllers are in multiple-bus failover
so each storage unit is presented by only one controller at a time.
6–46 Using Fibre Channel Storage