This update comes a little bit late because I got a timeout from the mods.
Anyway the first 33 day are over at the node ist currently at 1.07TB!
More than expected!
My Online score also healed to 99.17% again.
Now I have to find out, why the node shows 1.1TB (with trash) and TrueNAS only shows 1018GB and a compression ratio of 3.86.