This is a carry over from this thread ()
It appears that I am having an issue with this alert. Recently, we've had several windows servers that would not perform a shut down cleanly either via an automated script or a scheduled task just calling shutdown.exe /f /r or a user initiated restart. What appears to happen is several services do in fact shut down but the server remains up with a mouse cursor and a wallpaper but no other IO can be sent to the server. The servers do respond over ICMP.
My question is what exactly is solarwinds looking for in this Now - Last Sync field? Does solarwinds just check for an ICMP response and say that the server is ok or is it actually doing an SNMP Query to grab disk, cpu and memory stats and count that as a Last Sync? Is there a way to check that the Last Sync request was valid? This goes same for the Alert me when a managed node has not been polled during the last 5 tries. Does a polling cycle constitute just as an ICMP response or is solarwinds doing more advanced logic?