There are 3 pillars in Infosec which support the security of any system.
They are Prevention, Detection and Recovery. These relate directly to the well established Infosec triad of CIA or Confidentiality, Integrity and Availability. (I will go into more detail later).
Backups are the first pillar – Recovery. Recovery is key to ensuring Availability. It is also the easiest and cheapest to implement, so there is no excuse.
The Infosec Noob 