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Device Not Accessible - Slow Alert

 
qos
Advisor

Device Not Accessible - Slow Alert

I tested turning off a server that is being monitored on IMC and the Device Not Accessible trap did not occur in iMC until after a duration of around 5 minutes despite the poll interval being 60 seconds. The Device Accessible alert trap however was visible as soon as the server came back online.

 

Does anyone know what may cause this and how to investigate in the logs? 

 

The memory in usage on the server used by iMC is close to maximum.