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I was thinking more along the lines of a single power input like your home desktop PC. That you would need to splice into this power cable while it’s still hot

I was thinking more along the lines of a single power input like your home desktop PC. That you would need to splice into this power cable while it’s still hot. For servers I expect that they would have redundant inputs, that you can easily hot swap it. The second link had a video on how to do that. With multiple ways to achieve a power re-route, including a tool to easily splice into the wire. The easiest technique was to just use a sheath to touch the metal prongs on the cable. But the surprise for me was the power strip technique, where he plugged in his battery source into one of the 6 outlets, thereby simulating a power input. I didn’t even know that was possible.

jlokier 7y ago
> 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.
ZenPHP 7y ago
Hot swapping servers with redundant power supplies is great, until you discover the hard way that some nimrod plugged both power supplies into the same UPS. And not just once, but on every server in both racks, one UPS per server.