What part of the world? One service I worked on (with customers around the globe) had about 10 minutes of scheduled downtime a week. Peak user load was, intere

What part of the world? One service I worked on (with customers around the globe) had about 10 minutes of scheduled downtime a week. Peak user load was, interestingly enough, during our core hours, when there are a lot more hands on deck to handle any issues. So that's the time we chose. Naturally people still complained bitterly about that ten minutes. Getting to zero didn't seem worth the significant engineering effort required. "You're not Amazon, and you're not 911" [emergency number in the US]