what does one use nowadays for fail over safe personal clouds e.g. Nextcloud? Is there a nextcloud alternative that can survive partitions? Like if I have nextcloud in one location, and a backup in another if they can't reach each other but users also can't reach the other one how can I make sure the users can still use Nextcloud and then they system reconcilces? Seems nextcloud out of the box doesn't have that :( is there an alternative? is the only way really federated nextcloud setups?