HA deployment
"The contemporary form of Murphy's law goes back as far as 1952, as an epigraph to a mountaineering book by John Sack, who described it as an "ancient mountaineering adage": Anything that can possibly go wrong, does." | ||
| --Wikipedia | ||
Like mountaineers, we survive because we respect the environment where we live and thrive: we know it is full of perils, and we know that ignoring those dangers can be deadly (at least for our business/career).
People are used to the concept of communication as a utility, you take the phone and you hear the line tone… Only in the case of major disasters will a user experience an interruption in the working of her voice calls. Barring a hurricane and the like, the telecommunication industry has an outstanding history of reliability, one of the very few fields where we can experience those magic figures of 99.999% uptime (the mythical five nines).
So, we have users with very high expectations when it comes to their capability to place a call and be reached...
