[h3throw]

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

[z3t4]

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

[Cerium]

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.