Exclude Previews from nextcloud aio backup

I have a nextcloud aio running and love it.
It also run the app memories with the preview app. Now my backups are very big. 2 user with 200GB of data. The backup is ober 1Tb, now I think it backup the Previews so. I’m right? If yes, is there a wayto exclude this in the nextcloud aio backup strategy?

I can’t answer your question. But you can also check whether the /path/to/nextcloud/data/updater-****/backups folder is included in the backup. You don’t actually need to back it up.