A company operates its primary data center on the South Carolina coast, an area that is frequently in the path of Atlantic hurricanes. Management is reviewing four candidate facilities for a warm disaster-recovery site and has instructed the systems administrator that the location must satisfy the requirement for a separate geographic location so that a single regional event cannot disable both sites. Which proposed facility BEST meets this requirement?
A leased data hall 50 km up the coast that shares the primary site's electrical grid but sits outside the immediate storm-surge floodplain.
A second data-hall floor in the same building that houses the primary data center.
A colocation cage 10 km inland that remains inside the coastal hurricane evacuation zone and uses the same regional power grid.
A tier-III facility 400 km inland in northern Georgia that is outside the coastal hurricane zone, on a different power grid, and connected through a separate long-haul telecom provider.
Best practice calls for locating an alternate processing site far enough away-and preferably on a different power grid and telecommunications infrastructure-so that the same natural disaster or utility failure cannot affect both locations. The facility in northern Georgia is hundreds of kilometers inland, outside the coastal hurricane evacuation zone, and served by a different electrical grid and carrier network, thereby minimizing correlated risk. The other options leave the secondary site in the same hurricane hazard zone, on the same power grid, or even in the same building as the primary data center, so a single regional incident could still take both sites offline.
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