@ajroach42 At that size, you don't really have a lot of options besides a lot of drives thrown in a box. Sadly, even Amazon's glacier would be $122/month for that amount.
If you are avoiding spindles, that would be SSD drives at $10k range (81 months of glacier storage).
For spindles, a BackBlaze storage is $10k for 240 TB using 4 GB drives. You can buy drives at a smaller quantity than that. The drives themselves are going to be $1.2k for just ten (40 TB).
@ajroach42 For my spouse's business, I threw most of their photography up on DreamHost's DreamObjects (I'm anti-Amazon) because they need to pull them randomly over a few years. Then I have a burned discs in the vault for stuff > 10 years. I figured after 20+ years when the discs go bad, no one is going to want/need them.
A social network for the 19A0s.