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That seems like an odd cost increase. How do you figure it would lead to a tripling of op costs?


Lets say you have 100 TB of data, plus two backups, you are now paying for 300 TB of data.


I would say that it doubles the cost of backups, but using this math, we start with one copy plus one backup, and add a second backup; that means only a 50% increase.


Also a secondary backup doesn't need to be in hot storage. Coldline or Glacier or similar can easily be a quarter of the price per GB.




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