Party_9001

https://en.wikipedia.org/wiki/Flash_memory

Yes

This is not a question about how long data I put on the SSD’s will last.

Counterargument, you actually ARE. For example, the firmware is also stored on flash (albeit it's NOR instead of NAND as far as I know).

I have absolutely no clue how long NOR flash lasts, although I have heard anecdotally that it is much more reliable (and more expensive) than NAND. Hence why SSDs use NAND for mass storage, and use NOR for shit like firmware.

Is there any reason they won’t work after that amount of time?

Without that firmware it's not gonna do a whole lot lol. So I don't have an answer to your question, but I feel like it should also be considered.

Minimum $0

Maximum $infinity

That's an HDD, much cheaper (like 5~6x) for the capacity than SSDs.

It'll work fine. As for 16 vs 20TB you most likely don't have to worry about it. Usually those "limits" exist because drives larger than 16TB didn't exist at the time, or they existed but the manufacturer didn't bother certifying.

The only actually limit for something like this is 2TB. If it says it can do more then it has no effective limit.

How... the hell are you finding 20TB SSDs for that price? 15TB ones are like $1k lol

Do you know how much theyd cost? Lmao

You only have 1 option, what do you need advice on lol

/mnt/Storinator/NASty/Archive

Can I compress my media to back it up to a separate drive?

Yes and no.

Yes : You can compress it but the quality will get worse

No : You can compress it without quality loss but you're going to save less than 3%

I'm aware of 3-2-1 only by name but not sure what is the best way to proceed in my current circumstances.

If you want 321 then it might be easier setting up another RPI at the friends house with the backup disk since the majority of data is already on there. Then you can upload to backblaze at your leisure