Digitizing all my physical documents - Scanning/OCR, file organization, 2x backup, security of physical copies.
Cataloging my physical book collection - Library database for search/filtering/checkout/metadata, laser scanner!!!, re-organization of books, some digitization
Scheduled offsite and onsite backups - 2 network synced offsite backups for documents and photos (not media-server) using 8TB Seagate external hard drives connected to a Pi4 that sync over network. Most files will be preloaded, but changes will occur over network. Additionally a monthly backup for the full NAS using 28tb seagate