Installation guide

4
Overview of DIGITAL UNIX System and
Network Administration
The DIGITAL UNIX system and network administration environment is
similar to the ULTRIX administration environment. You can use most
administration tools on a DIGITAL UNIX system in the same way as on an
ULTRIX system. However, some differences do exist. This chapter is an
overview of the DIGITAL UNIX system and network administration
environment, describing the differences from the ULTRIX environment.
This chapter does not give detailed information about administering a
DIGITAL UNIX system or using DIGITAL UNIX system administration
tools. Administering a DIGITAL UNIX system is described in the System
Administration manual and the Network Administration manual.
4.1 Installation and System Setup
Installation and system setup are similar on DIGITAL UNIX and ULTRIX
systems. The DIGITAL UNIX installation procedure, like the ULTRIX
installation procedure, can use both the setld software and Remote
Installation Services (RIS) software to install a bootable system from
media. Both systems have setup scripts that you use in similar ways to set
up systems after an installation.
The DIGITAL UNIX installation supports configuring a system after
installation. This feature allows you to install software on several system
disks at one machine. You can then move each system disk to its own
machine and configure it for use there. Take note of cabling inconsistencies
and possible logical unit address changes (which affect the /etc/fstab
file) when moving disk devices between systems.
Unlike an ULTRIX and UWS system, where you choose whether to install
UWS, when you install a DIGITAL UNIX system, the mandatory
windowing software is automatically installed. The Installation Guide lists
the subset names. If you do not need the windowing software, you can use
the setld −d command to remove its subsets after the installation is
complete.
Like the ULTRIX system, the DIGITAL UNIX system is organized into
software subsets. Some subsets are required at installation time, while
Overview of DIGITAL UNIX System and Network Administration 4–1