Faults are synchronized from the Manager to the Central Manager. The faults (real-time faults or alarms) generated in the Managers are seen in the System Faults page of the Central Manager. You can customize your view of the alarms based on severity and alarm status. The Central Manager can acknowledge, unacknowledge and delete the Manager alarms. The changes are reflected in the System Faults page.
Alarms are resynchronized after every disconnect and reconnect between the Manager and the Central Manager and is shown in the Central System Faults page.
Alarms (displayed in the System Faults page) are automatic and are displayed as and when the alarm occurs in the Managers. For example, if there is a network disruption between Manager and Central Manager, an alarm is generated at the Manager. This alarm is immediately shown in the Central Manager. Once the connection is restored, the alarm is removed from the Manager as well as Central Manager.
Historical Faults can be viewed in the Fault Log reports. These historical faults are synchronized to the Central Manager to get a consolidated view of Faults of all the Managers. This synchronization can be done manually or can be scheduled.
All the fault logs are reported in the Fault log report and is available to the Central Manager only after synchronization.
The Fault synchronization scheduler synchronizes the faults from the Manager database to the Central Manager database. You can see the audit log messages for the fault log synchronization in the Central Manager.
Faults are sent to both Central Managers when in MDR mode. Real-time faults (Alarms) are automatically sent to both the Managers. But fault logs are sent only to the active Manager and copied to the secondary Manager as part of the MDR synchronization.
In the Manager, the Alarm synchronization is enabled by default. That is, the Manager starts the synchronization of alarms as soon as it connects to the Central Manager. In case the user wants to turn it off due to some reason for a particular Manager, the user can do so using the iv.mom.alarmSync.enabled property in ems.properties file by setting its value to false.
Fault synchronization in an MDR set up
There are four possible scenarios of fault synchronization in an MDR set up.
Real-time alarms for Manager in MDR— In such a case both the active and standby MDR alarms are synchronized with both Central Managers, if Central Manager is in MDR.
Fault log for Manager in MDR— Both the primary and secondary Manager's fault logs are synchronized only with the active Central Manager.
Real-time alarms for Central Manager in MDR— In active Central Manager, only the alarms of the active Manager can be acknowledged or unacknowledged or deleted. The standby Manager's alarms are read-only. In the standby Central Manager, all the synchronized alarms are read-only.
Fault log for Central Manager in MDR— Fault log is sent only to the active Central Manager and NOT copied to the secondary Central Manager. But when the standby Central Manager becomes active, a full fault log sync is made.