Re:GitHub was down
by raquo on Tuesday June 06, 2017 @09:12PM
(#14502983)
Your local instance of github and github.com are not redundant / interchangeable. If either of those goes down and you rely on it, the other one is not gonna help you much, so availability is not improved by using a local instance.
The odds of GitHub going down and your local copy/instance simultaneously is very low so availability is high.
Reliability is how often GitHub or your local instance goes down.