A user’s DataMiner used to have alarm storms very often but it stopped quite unexpectedly. We would like to go back in time to identify when an alarm storm has stopped. However looking at alarm history, there does not seem to be any records of alarm storms.
How can we identify the occurrences of alarms storm in the past using the alarm console?
Hi Bing, I believe what would help would be using the Alarm Console ‘History Slider’ 
Working with the Alarm Console history slider | DataMiner Docs. Clicking on the icon will bring up the history trend at the bottom of the alarm table console table:
Hi Thomas,
You could have a look at this question:
Trigger Alarm Storm Prevention in correlation rule
Whenever there is an alarm storm, an alarm will be raised linked to an element that represents the DMA. You could use this as a filter to determine possible alarm storms.
Hope it helps.