Northern Telecom NAC User Manual page 33

Secure the System for Power Down
Press s and {ENTER} to safely power the NAC down. Do not attempt to
power down the system without running this option first. A power down is
required to perform any hardware maintenance or to reset the software if
the normal "Restart the NAC System" option is not functioning.
I/O Port Reconfiguration on System Restart
Press i and {ENTER} to select I/O port reconfiguration. This option allows
the system to recognize additional and removed I/O cards when the system
is restarted or powered back on. This option is disabled by default. It must
be enabled before restarting the system each time the user wishes to execute
this feature.
When enabled, the system runs the automatic hardware detect program,
which detects the actual number of accessible MVME332XT ports in the
system during the boot-up sequence. When the system is powered on, the
Configure NAC System screen appears to allow users to redo port
assignments. The user is also prompted to enter the Network Definition
screen to reassign any network links that may have been changed or
removed. Refer to the "Configure NAC System" section of this chapter for
more information on these screens.
If an I/O card is removed, the devices associated with it are automatically
deleted. All devices assigned to the removed card (a network link, remote
Network Administration Center System Administration and Maintenance Guide Product release 2
Maintenance and administration programs: system shutdown 4-5
CAUTION
Do not power down a system without
first performing the system shutdown
procedure.
The NAC must not be powered off without first
shutting down the system. Failure to do so may
result in unrecoverable corruption to the data and
operating systems.
The shutdown process synchronizes the
information currently in system memory with the
information on the hard drive. Only in extenuating
circumstances should the system be powered off
without first shutting down.