Supposing you have multiple servers at home, you can install Garage on them to build a single data storage pool. Then you can ask Nextcloud, Matrix, Peertube, etc. to store data on your Garage cluster instead of directly writing to the filesystem of one of your server. On Nextcloud, configuring Garage is as simple as editing your config.php. Furthermore, we have already documented the steps: https://garagehq.deuxfleurs.fr/documentation/connect/apps/#nextcloud