Describe the term Disaster Management as security threats

Making and testing backups regularly could be the simplest and easiest of all the security measures. But a new question will immediately arise - "how many backups and where". Clearly, it is possible that the backup could contain a virus or there was a media failure or bad sector. Still a step further, the entire building collapses due to an earthquake or fire. Solutions lie in terms of maintaining a number of backups, some put at a remote server or site (maybe a few thousand kilometers away from the location).

Such issues of security threats and management can be found separately as "Disaster Management".