Comment Re:No redundancy (Score 1) 247
But then what about the reliability of that backup hardware, especially if it isn't subject to the same kinds of loads as the primary?
At a certain point, "Shut everything down (safely)" is cheaper than having more redundant valvles, pumps, pipes, and more tubes in a series.
It is like RAID 1: you are more likely to have some kind of hard drive failure, but that hard drive failure is more likely to be recoverable.