Low disk space

[Vikas_g1997]

Hi Team,

Is there any formula on how disk usage is captured in dynatrace. we have received an alert for low disk space but as confirmed by the customer the H drive is free for more than 50% on the server.

[ChadTurner · Accepted solution]

@Vikas_g1997 Out of the box, Dynatrace will leverage a baselining. This baseline is formulated over 7 days. As days elapse and you get closer to completing 7 days of baselining, the AI Baseline for the given entity gets better and better. So if your host uses 50% disk space over the past week, and that jumps up to 80%, that's 30% increase is enough of a deviation from the established baseline to trigger a problem being raised. 

Yes, organizations might want a static alert in the sense that they don't want to be bothered until a threshold is met, say 10% free space left. This can also be set via the host settings under anomaly detection. 

[wiwinleung]

@ChadTurner, coming across this and would like to clarify...
Does it mean if I change the Detection mode for low disk space to "Based on custom settings", the "AI baseline" will longer work (i.e. no problem for an increase in disk space from 50% to 80% in the above scenario)?
Many thanks!