rclone of course.
Data Hoarder
We are digital librarians. Among us are represented the various reasons to keep data -- legal requirements, competitive requirements, uncertainty of permanence of cloud services, distaste for transmitting your data externally (e.g. government or corporate espionage), cultural and familial archivists, internet collapse preppers, and people who do it themselves so they're sure it's done right. Everyone has their reasons for curating the data they have decided to keep (either forever or For A Damn Long Time (tm) ). Along the way we have sought out like-minded individuals to exchange strategies, war stories, and cautionary tales of failures.
Backblaze offers $6/TB/month. They also offer a service called Fireball where they'll send a 72 TB (I think) NAS to you. You upload everything you need and mail it back. It's only like $40 plus a deposit.
Well, at that scale, price is a concern.
With limited outflows, S3 or Backblaze might be a good option.
I personally use enterprise Google workspace account (12 bucks per 5TB/Month, unlimited outflow). For uploads, I have custom software that does partial uploads to Google Drive correctly. There definitely are others.
Yes, IDrive works here, they'll send you a hard drive with their service called IDrive express, Good product and pricing too...so every backup after your first upload via idrive express will be incremental..