By default the alarm has the following settings on Rules tab:VmDisconnectedEvent
are sent out by Vcenter Server in case the host where a VM resides by any reason was disconnected from Vcenter or any other issue.
In the alarm history a state change during a certain period of time can be observed
Detailed investigation and analysis of the database of Veeam Monitor shows that there are 2 events to be received from a vCenter server:
As displayed on the screenshot, there are 2 events in last alarm state record. This mean that 2 events has been received simultaneously and have equal time stams.