Disaster Recovery is a concept that insists on planning for computing failures in one or many computing devices. For IT systems that support business functions, a Disaster Recovery Plan (DNP) and recovery technologies are essential, given our reliance on computers. Businesses need to keep critical aspects of their daily processes functioning even in the midst of disruptive events, whether they are natural or human-error malfunctions. Disaster Recovery should include quick resumption of applications and communications (such as networking) along with the backup revival of data, hardware, and other IT infrastructure.
To illustrate just how critical basic disaster recovery can be, there is a study titled "Backing Up Business - Industry Trend or Event" that discovered a significant business impact in massive data loss. Out of the companies that endured a major loss of business data, only 6% survived long term. 43% were never able to revive their business and 51% were forced to close within two years.
A DRP is the IT-related section of a Business Continuity Plan (BCP), which includes planning for non-IT aspects of a recovery such as responsibilities and public relations during a crisis. Organizations have three types of measures against disaster events:
Preventative Measures: aimed at preventing disaster events
Recovery plans will sometimes include metrics to indicate how effective a recovery was. These include a recovery point objective (RPO) and a recovery time objective (RTO).
An organization can choose from a variety of different disaster recovery service and technology packages from industry vendors if they don’t want to deal with recovery themselves.