Rrd4j data location?

Hello there,
I am currently trying to migrate from OH 1.8 to OH2.

Since I want to keep my rrd4j Data I want to copy them.
But I dont seem to find the storage location of the data.

Where do I find it in Openhab 1.8 and where do I have to put it on the OH2-installation (using openhabian)?

I cant find the folders/files…

Thanks.

You may be on your own for OH 1.8. In OH 2 they end up in /var/lib/openhab2/persistence/rrd4j.