Disaster Recovery (DR) in information technology refers to the tools, procedures, policies and strategies laid out to ensure a quick recovery of IT operations following a disruptive event. DR is a critical part of the security planning of an organisation. DR primarily focuses on IT infrastructure of a company and aims to keep it protected from the effects of a disastrous event such as natural disasters, critical system failure and cyber attacks. An effective disaster recovery enables an organisation to sustain its vital technology infrastructure and efficiently resume its critical functions.
Points to Remember
- Disaster recovery and business continuity are often considered the same concept. However, both terms represent different processes and are not interchangeable. As opposed to business continuity which focuses on all aspects of business operations, DR only deals with IT infrastructure. Thus, DR is considered a subset of business continuity.
- The entire disaster recovery process can be divided into three categories:
- Preventive measures: Aims to prevent a negative event from affecting the IT infrastructure.
- Corrective measures: Meant for correcting the vital systems during or following a disaster.
- Detective measures: Involves detection of disastrous events and their effects.