Compaq AA-RHGWB-TE manual 42Using Fibre Channel Storage

[16]UDID:144 WWID:01000010:6000-1fe1-0000-0d60-0009-8080-0434-0028 (ev:none)

[17]UDID:-1 WWID:01000010:6000-1fe1-0000-0ca0-0009-8090-0708-002b (ev:none)

[18]UDID:-1 WWID:01000010:6000-1fe1-0000-0ca0-0009-8090-0708-002c (ev:none)

[19]UDID:-1 WWID:01000010:6000-1fe1-0000-0ca0-0009-8090-0708-002d (ev:none)

[20]UDID:-1 WWID:01000010:6000-1fe1-0000-0ca0-0009-8090-0708-002e (ev:none)

1 2 3 4

1

2

3

4

The number within the brackets ([ ]) is the item number of the device shown on any particular line.

The UDID is assigned at the HSG80 with the set Dn IDENTIFIER

=xxx command, and is not used by the Tru64 UNIX operating system, but may be set (as we have done with the SET D131 IDENTIFIER=131 group of commands). When the identifier is not set at the HSG80, a value of -1 is displayed.

The worldwide name for the device. It is prefixed with the value WWID:01000010:. The most significant 64 bits of the worldwide name resembles the HSG80 worldwide name, and is assigned when the unit is manufactured. The least significant 64 bits is a volume serial number generated by the HSG80. You can use the HSG80 SHOW unit command to determine the worldwide name for each storage unit (as shown in Example 6–2).

The console environment variable set for this worldwide name. Only 4 wwid<n> console environment variables (wwid0, wwid1, wwid2, and wwid3) can be set. The console show dev command only shows those disk devices for which a wwid<n> console environment variable has been set using the wwidmgr -quicksetor wwidmgr -setcommand. In this example, none of the wwid<n> environment variables is set.

4.Look through the wwidmgr -show wwid display 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.Example 6–3 shows the use of the wwidmgr command with the

-quicksetoption to define the UDID as the device unit number as an alias for the worldwide name for each of the devices. The wwidmgr -quicksetutility sets the device unit number and also provides a display of the device names and how the disk is reachable (reachability display).

Example 6–3 shows:

• The use of the wwidmgr -quicksetcommand to set the device unit number for the Tru64 UNIX Version 5.0A installation disk to 133, the cluster member system boot disks to 131 (cluster member 1) and

6–42Using Fibre Channel Storage