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Installation tapes
Before starting any upgrade, verify that the system is performing properly.
Check the NAC error log and the UNIX system log (when appropriate) to
verify that midnight backups are successfully completed. Schedule an
upgrade to be completed before 11:30 p.m. or started after 1:00 a.m.
Changes in the number or type of workstations or printers do not require an
upgrade, but do require a port assignment reconfiguration for the NAC
system. This reassignment can only be done while the system is shut down,
using the Configure NAC System feature. For more information, refer to
the NAC 2 System Administration and Maintenance Guide (NTP
553-4011-510), "Maintenance and administration programs: system
shutdown" chapter, "Configure NAC System" section, "Port assignment"
subsection. Use the "Workstation configuration" procedure, in the
"Peripheral devices" chapter, to configure a VDT or PC workstation that
you have not previously configured.
All procedures use one or two cassette tapes. Care must be taken to avoid
damaging the tape, as its fragility can cause damage that can result in tape
errors during the installation procedure. Also ensure that installation tapes
are set to write-protected before using them. Keep tapes away from
excessive heat or electromagnetic radiation. Figure 5-1 shows the correct
method for inserting a tape cassette into the tape drive of a NAC 2 system.
Make sure the arrow on the label points towards the drive, and that the
notch in the cassette tape is pointing down.
Verify that all features on the application tape label are correct before
starting the upgrade procedure. Log on as maint, enter v to view all
existing options, then enter t in the submenu to view the tape identification.
Make sure your tape label list matches your specific tape identification. The
Network Administration Center (NAC) Installation Guide Product release 2
WARNING
Changing the NAC system time
When you change the NAC system time, ensure the
following conditions are met:
the time is not changed between midnight and
01:00
the new time does not fall between midnight and
01:00
Software installation overview 5-7
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