Storing a file on two tier1s would surely protect you from fire, water, theft no? Yet you will also be paying for all the extra copies Amazon and Google each make. I'm not disagreeing that this is the right strategy, just pointing out that the market offerings and trends don't support it.
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> > "fire, water, theft"
i'm sure you could add a few more things to the list.
> I don’t think it’s terribly common for even medium sized companies to have a multi tier1 cloud backup strategy.
not terribly common to understand risk.