I want to prevent alerts from trigger on stale data by adding a condition where parent node's LastSystemUpdateTimeUTC value is in the last hour. I have a separate process for handling devices that Solarwinds has lost the ability to poll, so I don't want them to generate alerts.
For example, I recently created a volume utilization alert that unfortunately cause tickets to be opened for systems that Solarwinds has not been able to poll for quick a while. Because the device was pingable , it shows as up, even though SNMP/WMI is broken so that resource data is stale.
I don't see a way to do add the condition - "Current time - LastSystemUpdateTimeUTC <= 1 hour" , for example. but that is what I am trying to do.