IT disaster recovery
Maintaining or reestablishing vital information technology infrastructure / From Wikipedia, the free encyclopedia
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This article is about a sub-practice of business continuity planning (BCP). For societal disaster recovery, see emergency management.
IT disaster recovery (also, simply disaster recovery (DR)) is the process of maintaining or reestablishing vital infrastructure and systems following a natural or human-induced disaster, such as a storm or battle. DR employs policies, tools, and procedures with a focus on IT systems supporting critical business functions.[1] This involves keeping all essential aspects of a business functioning despite significant disruptive events; it can therefore be considered a subset of business continuity (BC).[2][3] DR assumes that the primary site is not immediately recoverable and restores data and services to a secondary site.