When it comes to keeping an organization’s IT infrastructure up and running 24/7, there still seems to be some confusion between the three core terms used in this domain. These core terms are high availability (HA), fault tolerance (FT), and disaster recovery (DR). The terms are often used interchangeably since, on the surface, all of them are aimed at achieving an IT system’s continuity. It is important, however, to note that each of these terms have their own specific definitions, methodologies, and roles.
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