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CompTIA Server+ SK0-005 · Domain 3: Security and disaster recovery

Disaster recovery: hot, warm and cold sites, cloud DR, replication (synchronous vs asynchronous), RPO and RTO, DR plan testing (tabletop, live failover)

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Last reviewed September 25, 2026 · Leer en español

Disaster recovery (DR) is the set of plans and technology used to restore IT services after a major event such as a fire, flood, extended power loss, cyberattack or regional outage. Where backups restore data, DR restores whole services, often in a different location.

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