N+1 represents the amount required for operation plus a backup. It ensures system availability even in the event of a component failure. It is similar to the concept of a spare tire on your car. When you get a flat, you have the ability to swap out the flat with a spare tire. This simply means that you could survive one flat tire.
Unit of Measure:
Term ID: c84c89ae-da08-4422-b107-ee8c7ad75596