The document discusses key phases and considerations for developing a disaster recovery strategy for a data center. It outlines 6 phases: 1) identifying and prioritizing business services, 2) mapping services to infrastructure requirements, 3) categorizing recovery time objectives, 4) right-sizing the disaster recovery data center, 5) determining an appropriate location, and 6) considering additional factors like tier level and transportation. It also discusses documenting the strategy in areas like virtualization plans, data management, equipment acquisition, and operations. Financial examples are provided to illustrate the cost differences between maintaining recovery capabilities for all versus critical infrastructure.