Ask HN: What do you use for storing large amounts of personal data? (12TB+)

As someone who keeps a clone of every machine I've ever bought, runs daily backups and has a very data hungry hobby (timelapse photography) - at any given time I am running out of disk space. I have ~10TB of disks ranging from 500GB to 2TB - and half a dozen that have failed less than a year from buying them.

This method seems expensive, is prone to data-disaster and quite often has me sifting through half a dozen drives into the wee hours of the night looking for that one file that would be perfect for the job at hand (even when I know part of the file name).

I would love to use online storage but the Internet speeds here (Australia) would mean it would take literally a year to upload all my data - and would cost almost as much as my monthly rent too.

What do other people in this situation do?