IBM System/370 Manual page 108

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• Train operators to run the System Test and the Processor Logout
Analysis programs. The conditions under which these programs are
to be run should be determined jointly
by
the user and the customer
engineer.
• Plan system and program recovery procedures (use of warm start
and checkpoint/restart facilities)
• Have operating personnel perform normal hardware maintenance
procedures. such as the periodic cleaning of tape drive heads.
Proper system hygiene should be maintained. in general.
• Implement an effective program of operator training so that the
number of system malfunctions that occur because of operator error
is reduced.