I wish to dispel a myth that is rapidly spreading and must admit that I didn’t verify the facts myself the first few times I heard it. The myth of 99.9% uptime. People are saying that the 0.1% represents 8 whole days of downtime a year. That is not true at all! The truth is: it represents 8.76 hrs. That’s all. Barely a working day. You can do the math if you want.