Disaster recovery: How to reduce the business risk at distance
Geographic distance is a necessity because disaster recovery data centres have to be placed outside the circle of disruption.
The meaning of this term depends on the type of disaster. This could be a natural phenomenon like an earthquake, a volcanic eruption, a flood or a fire. Calamities are caused by human error too; so the definition of the circle of disruption varies. In the past, data centres were on average kept 30 miles apart as this...