Hi Janstieler.
I can confirm that the /data and /seafile-data are the same folder.
The files in the /seafile-data/ folder are stored in a block-format using compression to reduce file size.
Please note, if you only recover the seafile-data folder but not the database, you will need to manually input the folders back into Seafile.
Please see guide below:
If you have any issues with your backups, please let me know!