> For servers I expect that they would have redundant inputs, that you can easily hot swap it. This is true, but there is still a real risk that the dual power

> For servers I expect that they would have redundant inputs, that you can easily hot swap it. This is true, but there is still a real risk that the dual power input on the server fails when you actually do the swap. For example, the second PSU may not work, or it may have failed in the past and then be forgotten about, or connector or cable internally may be flaky, or the component that combines power from both PSUs may fail (although I think that's quite rare). If it's a really critical service, those risks may be unacceptable.