The problem with Umbrel is, it is quite hard to give Umbrel access to more disk space. I couldn't figure it out. Sure you can SSH in and mount a USB disk, but then that additional disk space doesn't show up anywhere in the Umbrel server stats and none of the docker containers that you install have access to that volume as well.

I found Umbrel fairly useless for any if those apps that require huge amounts of disk space, like Nextcloud and Immich.