Technical data

This section describes how to perform the following tasks:
• Before the installation:
a. Configure HSG80 storagesets — In this manual, example
storagesets are configured for both Tru64 UNIX and TruCluster
Server on Fibre Channel storage. Modify the storage configuration
to meet your needs (Section 6.9.1.1).
b. Set a user-defined identifier (UDID) for each storage unit —
Although Tru64 UNIX does not use this identifier directly, you use
the UDID as input to the
wwidmgr -quickset command in a
subsequent step (Section 6.9.1.2).
c. Use the UDID as input to the wwidmgr -quickset command to
set the device unit number — The device unit number is a subset
of the device name (as shown in a show device display). For
example, in the device name DKA100.1001.0.1.0, the device
unit number is 100 (DKA100). The Fibre Channel worldwide name
(which is often referred to as the worldwide ID or WWID) is too long
(64 bits) to be used as the device unit number. Therefore, you set a
device unit number that is an alias for the Fibre Channel worldwide
name (Section 6.9.1.3).
d. Display available Fibre Channel boot devices — When you set
the device unit number, you also set the wwid
n and Nn console
environment variables. These variables indicate which Fibre
channel devices the console can access and which HSG80 ports can
be used to access the devices. The wwidn variables also show which
devices are displayed by the show dev console command, indicating
that the devices can be used for booting or dumping (Section 6.9.1.4).
e. Set the bootdef_dev console environment variable — Before you
install the operating system (or cluster software), you must set the
bootdef_dev console environment variable to ensure that you boot
from the correct disk over a reachable path (Section 6.9.1.5).
• Installing the base operating system and TruCluster Server software:
a. Install the base operating system (Section 6.9.2).
b. Determine the /dev/disk/dskn values to use as TruCluster Server
disks (Section 6.9.3).
c. Label the disks that were used to create the cluster (Section 6.9.4).
d. Install the TruCluster Server software and create the first cluster
member (Section 6.9.5).
e. Reset the bootdef_dev console environment variable
(Section 6.9.6).
6–52 Using Fibre Channel Storage