[jtchang]

For me it's basically summed up as "we didn't test turning the power off" and making sure things worked the way we planned.

Yes it is hard and very expensive to do these types of tests. And doing it regularly is even more $$$ and time.

As most customers we seem to be okay with a cheap price hidden behind a facade of "high availability" since I don't really want to pay for true HA. Because if I knew the real cost it would be too expensive.