Chapter 1: Appliance Hardware Functions
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The advantage of using the hard reboot is that, with many services and file closures being bypassed, there
are far fewer opportunities for a shutdown or reboot sequence to hang in an unrecoverable state. You avoid
the risk incurred by remotely using one of the other "softer" commands when there is no convenient access
to the physical button override in the event that the command fails.
Automatic Restart Following a Power Interruption
If the appliance was deliberately powered down, using the START/STOP switch or the
sysconf appliance
poweroff
command, it remains off until you press the START/STOP switch. However, if power was removed
while the system was on (either a power failure, or the power cables were disconnected - not good practice),
then the system restarts without a button press.
This behavior allows unattended resumption of activity after power interruption. In most cases, it is assumed
that this would never be needed, as you would install the appliance with its two power supplies connected to
two completely separate, independent power sources, at least one of which would be battery-backed
(uninterruptible power supply) and/or generator-backed.
Power Supply and Fan Maintenance
The two power supplies in the SafeNet Luna Network HSM appliance are hot-swap capable, meaning that one
is sufficient to power the appliance while the other is removed and replaced, with no service interruption. The
indicator light (LED) on each power supply shows different behavior, depending upon conditions.
Power Supply Condition
Power Supply LED
DC present/only standby output on
Flashing green (1Hz)
Power supply DC output ON and OK
Steady green
Power supply failure
Steady RED
Power supply warning
Flashing Blue/Red (1Hz) alternating
Input power failure (only in n+1 configuration)
Flashing Red (1Hz)
A power supply controller in the appliance monitors the state of the power supplies. It ensures that a failed
power supply still gets sufficient direct current from the remaining power supply to light the indicator LED. The
controller also sounds an audible alarm when there is a problem, such as one power supply not being
connected to AC main power.
If only one power supply is present, the audible alarm is silent. If you wish to operate your SafeNet Luna
Network HSM appliance with only one power supply, we recommend that you remove the second supply to
silence the audible alarm.
Replacing a Power Supply
You may need to replace a power supply in the event of a failure.
SafeNet Luna Network HSM 7.3 Appliance Administration Guide
007-013576-005 Rev. A 13 December 2019 Copyright 2001-2019 Thales
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