Extremely high disk space usage

[Ant0n007]

I started 5 nodes of my application with Kamon for system metrics and actors metrics. When I start Grafana
in a couple of minutes, it eats 13GB hard drive of space. Is it correct behavior? Why this data so big?

Also, I don't use Play! in my application as wrote here.

Someone can tell me are these metrics have usual size?
The most of space eats system-metrics.

@ivantopo Please advice.

[Ant0n007]

Too many actors were created in my application and situation was as described here. So it was adding new metrics every second.
Also, that pattern creates metric files for 7 days, and save datapoints every 10 seconds. The main idea that I didn't know is that space on the disk is reserved before metrics have really existed. Information about patterns also here