Does anyone have some more information about the technical part? What kind of filesystem support does it use (mdadm+ext4, BTRFS, ZFS, etc.)? Who maintains updates for the Apps? Are they manually maintained by them or do they just reuse what is available on e.g. dockerhub? How does their integrated backup solution work (filesystem or database based, rotation, encryption, etc.).

Their tiemline on their webpage is pretty outdated. But on github you can see that they are actively maintaining it.

Anyone got some real life experience with it?