Defining Disaster Recovery
By definition, recovery is the restoration or continuation of a technology infrastructure critical to an organization after a natural or human-induced disaster. Disaster recovery assumes that a major event has occurred, resulting in the loss of an entire site or a large section of infrastructure.
Disaster recovery is measured on recovery point objective and recovery time objective, two measurements that were discussed earlier in this chapter. Designing for disaster recovery differs from that of high-availability because the two goals, though they might seem relatively similar, are actually different. Designing for disaster recovery requires planning for redundant resources end to end, even across multiple sites. Additionally, ...
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