Having DNA as a storage medium is the best way to store actual biological data. Currently, we do things like having seedbanks, which need periodic replacing as

Having DNA as a storage medium is the best way to store actual biological data. Currently, we do things like having seedbanks, which need periodic replacing as seeds grow to be nonviable. A library of genomes is a much smaller physical footprint than a seedbank. It doesn't need periodic replacing, provided its not getting bombarded by radiation or anything unusual like that. DNA doesn't even have to be stored frozen; you can freeze dry it and store it at room temp for a very long time before any significant degradation. You can also just have the sequence stored digitally, and synthetically build out the dna molecule as you need it (I think this is still pretty costly though and not that efficient). With the right molecular biological tooling, one could conceivably introduce these genomes into a plant cell line and grow them up in tissue culture, you don't have to for example grow a tree and let it mature and go to seed since plant cells are pluripotent, everything can be done in a lab much faster.