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_{Now I use spideroak. I pay 120$ a year for unlimited zero-knowledge encrypted storage. Currently using 9 TB. :)}

I can't see that plan here: https://spideroak.com/one/ $279 for 5TB seems to be the top of the range. I do hope that zero knowledge is not simply a prescient comment on your future data availability.

Also, why is this needed for a zero knowledge data storage silo: https://spideroak.com/dmca-takedown-notice-submission/ ?