Alarm Threshold Unit
Allows the alarm level to be defined in either Disk Space Left (MB) or Recording Time left (min).
Alarm Threshold Level
Sets the number of units (minutes or MB) left at which the SNMP alarm is triggered. The minimum settable is 11. This also sets two further SNMP alarms levels. The alarm for when available space has returned to a sufficient level is set at the Alarm Threshold Level plus 30. A critical alarm level is set, at Alarm Threshold Level minus 30 or, when the Alarm Threshold Level is less than 40, Alarm Threshold Level minus 10.
Note: Currently, once the critical alarm level is below 30, it will increment downward in accordance to the rule stated above but will not reset upwards to a higher value except following the use of the Default Settings button.
Returns the Alarm Threshold Level to 60 (and the OK level to 90 and critical level to 30).