How to get minimal value for free disk space?

[darko11z]

On one of our servers there was free disk space incident two days in a row at very similar time around 16:00.

Now I am looking at Zabbix v6.0 data for 3 days interval and I get this:

Graph shows 20 GB still free on disk.Probably some kind of average, because free disk incident was like 30 min lasting each day.

But thinking little bit more... I actually don't want to have some "average" graph for free disk space. I want to have minimal value, so I can see the issue.
I have changed the graph setting to Aggregation function set to min (that is minimum) and Aggregation interval set to 1m (that is one minute).


Above settings display graph:

Graph is better (nearer the truth of 0 GB), but still I expect to see 0 GB.

How to set settings to actually see the minimal value for graph in some interval like 1 min?

[cyber]

Don't aggregate...

[darko11z]

cyber, first graph is "don't aggregate" and it looks like Zabbix performs some sort of aggregation. Arrows point to some value on y-axis that should be 0 GB, because there were out disk space events.

[cyber]

Considering your graph has data about whole 24h and it is quite small, then yes... Zabbix does somekind of aggregations there. there is no room (pixels) to draw each data point on screen.. If you zoom in, you probably get also those points drawn...