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A comment on Tell HN: AWS appears to be down again. Parent comment

Re:Tell HN: AWS appears to be down again by JackFr on Wednesday December 22, 2021 @11:53AM (#29651865)
You assume failures are uncorrelated. Which, depending on what you think you are protecting yourself from, might or might not be true.

(Consider a buggy software release which incorrectly deletes a backup. Depending on the bug it’s very possible it will delete in both places.)

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Re:Tell HN: AWS appears to be down again by bee_rider on Wednesday December 22, 2021 @12:42PM (#29652587)
If one buggy software release can delete both copies, then you don't have actual redundancy from the point of view of that issue.
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