Systems failures can be down to many different scenarios, running from human errors, software issues to terrorist attacks and natural disasters.
In computing, redundancy also comes in different segments.
There is hardware redundancy, which includes dual modular redundancy and triple modular redundancy.
Elsewhere, there is also information redundancy, such as error detection and correction methods, time redundancy, and software redundancy.
As the world digitises and depends ever more on technology, redundancy is becoming a pillar to any business and organisation.