Functionland will initially run some nodes to address temporary excess Storage needs at any point before more nodes join or current nodes add storage to cover for that. So your data stays safe on functionland nodes and transferred to other nodes once more storage becomes available. To note that Functionland nodes will be temporary to ensure stability of the network only when it's needed and doesn't replace the decentralized nodes as our goal is to keep data on decentralized nodes operated by individuals. Also at launch from just preorder nodes there will be more than 1PB of storage available which is one of the largest decentralized storage networks