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False alarms monitoring disks

Started by Darren Leggett, October 19, 2018, 03:29:37 PM

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Darren Leggett

I am monitoring a numebr of disk on Windows file servers.  I have set a low disk space threshold of < 5% free space (for last 10 polls) and a no disk space threshhold of <1% (for last 10 polls).  Occasionally I will get an alarm that disk space is low (it will give a value of 1000% or more).  When I check the actual values for the last couple of days they are all above 9%.  After these events I do not get a deactivation event occuring (even though the value is greater than the threshold) so I have to terminate the alarm manually.    Anyone got an idea what may be causing this? 

Tatjana Dubrovica

Please show screenshots of threshold configuration.

Darren Leggett

Is this what you need?

Tatjana Dubrovica


Darren Leggett

I am monitoring the FileSystem.FreePerc DCI metric.

Darren Leggett

Misconfiguration on my part. Inother DCI was using the same event.