I'm not sure what exactly you mean - but we typically store DNA sequencing data from people that want us to analyze it, databases of proteins and scientific art

I'm not sure what exactly you mean - but we typically store DNA sequencing data from people that want us to analyze it, databases of proteins and scientific articles, ML models, etc. Proper considerations of how to store the data and compress it correctly help a lot, but unfortunately academics are pretty terrible at choosing the right data structures for the job, and often several copies are needed for mirroring the raw data, then the processed versions are updated.