The value of tmnxHwLastAlarmEvent indicates the object name
and instance value that points to the row entry in the ALARM-MIB
containing the most recent alarm associated with this hardware
component. If tmnxHwAlarmState has a value of 'alarmCleared(2)', the
most recent alarm event will be in the cleared alarm table. If it has
a value of 'alarmActive(1)', the most recent alarm event will be in
the active alarm table. If the value of tmnxHwLastAlarmEvent is
'0.0', either no hardware component alarm events have occurred since
the system was last booted, or the last hardware component alarm event
has aged out and its entry is no longer available in the ALARM-MIB
tables.