A system shutdown does not imply turning off power to the
computer hardware. Instead, system shutdown means
stopping the computer's operating system. Stopping system
activity makes the computer inaccessible to users. You would need
to shut down the system for maintenance, for a physical move, for
changing the system configuration, or for security reasons.
If done properly, a shutdown preserves all system and user
files. Before the shutdown occurs, backlogged reports can be printed,
or they can be saved to tape and replaced when the system is running
again.
The shutdown procedure usually consists of several steps,
including the following:
Telling users well in advance of a planned shutdown
Warning users a few minutes before the shutdown
Preventing anyone from starting a new job or session, or printing
new reports
Clearing the backlog of reports before the shutdown (This step is
unnecessary unless you need the space that these reports are using.)
Answering any console requests
Shutting open communication lines
Aborting remaining jobs and sessions
Entering the =SHUTDOWN command
The next several sections describe procedures associated with
shutting down a system. Read through the remainder of this chapter
before attempting a shutdown based on these instructions. Become
familiar with the commands and options used in each process. Examine
the processes for areas that you may need to customize for your
system.
Entering the SYSFILE Configurator
Including Shutdown Information in the Welcome Message
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