Technical data

Table 6–4: Converting Storageset Unit Numbers to Disk Names (cont.)
File System
or Disk
HSG80
Unit Worldwide Name UDID Device Name dskn
/usr
D143 6000-1FE1-0000-0D60-
0009-8080-0434-002B
143
N/A
a
dsk19
/var
D144 6000-1FE1-0000-0D60-
0009-8080-0434-0028
144
N/A
a
dsk18
a
These units are not assigned an alias for the device unit number by the WWID manager command; therefore, they do not
get a device name and will not show up in a console
show dev display.
6.9.1.3 Set the Device Unit Number
The device unit number is a subset of the device name as shown in
a show device console display. For example, in the device name
dga133.1001.0.1.0, the device unit number is 133. The console uses this
device unit number to identify a storage unit. When you set a device unit
number, you are really setting an alias for the device worldwide name. The
64-bit worldwide name is too large to be used as the device unit number,
so an alias is used instead.
This section describes how to use the wwidmgr -quickset command to set
the device unit number for the Fibre Channel disks to be used as the Tru64
UNIX Version 5.1A installation disk or cluster member system boot disks.
Setting the device unit number allows the installation scripts to recognize a
Fibre Channel disk.
To set the device unit number for a Fibre Channel device, follow these steps:
1. Use the HSG80 show unit command to obtain the user-defined
identifier (UDID) for the HSG80 storageset to be used as the Tru64
UNIX Version 5.1A installation disk or cluster member system boot
disks. Record the UDIDs. The show unit command also displays the
HSG80 disk name, so you can be sure you are using the correct device.
In the example in Table 6–4, the Tru64 UNIX disk is unit D133 with a
UDID 133. The UDID for the cluster member 1 boot disk is 131, and the
cluster member 2 boot disk is 132.
2. From the AlphaServer console, use the wwidmgr -clear all
command to clear the stored Fibre Channel wwid1, wwid2, wwid3,
wwid4, N1, N2, N3, and N4 console environment variables. You want to
start with all wwid
n and Nn variables clear.
P00>>> wwidmgr -clear all
P00>>> show wwid*
wwid0
wwid1
wwid2
Using Fibre Channel Storage 6–61