In today’s world, information is the most valuable asset. Losing information may cause severe damages, sometimes unrecoverable. This is why organizations are trying to protect themselves against data loss as much as possible by building fault-tolerant systems, employing cloud computing for data storage and implementing complex backup systems. However, sometimes the inevitable happens, and information disappears from the most reliable storage. Understanding the costs and implications of data loss as well as realistically estimating the possibility of restoring the lost data is extremely important in corporate environments.