Theoretically a real shutdown might go in a different way than previous tests or simulations. For instance in a test you might cut the connection completely, wh

Theoretically a real shutdown might go in a different way than previous tests or simulations. For instance in a test you might cut the connection completely, while in the real case only some power circuits go down or whatever. For instance GitHub's relatively recent shutdown was due to a fail-over heartbeat not going as expected.