Disaster Recovery Explainer
Disaster recovery is the process of restoring systems, data, and services after a serious disruption. The disruption might be caused by a cyberattack, hardware failure, power problem, natural disaster, or a major mistake during a change.
A recovery plan identifies the systems that matter most and sets goals for getting them back. The recovery time objective, or RTO, is the target for how quickly a service should return. The recovery point objective, or RPO, describes how much recent data an organization can afford to lose.
Recovery can use backups, replicated systems, alternate locations, and documented steps for bringing applications back in a safe order. Clear roles and contact information help people make decisions while the situation is changing.
A plan is only useful if it is tested. Regular exercises can uncover missing access, outdated instructions, or dependencies that were overlooked, giving teams a chance to improve before a real emergency occurs.
Disaster recovery restores systems and data after a major disruption. It combines technology, documented procedures, and trained people so critical services can return safely.
RTO is the target time for a service to be restored. RPO is the maximum acceptable amount of recent data that may be lost, helping guide backup and replication choices.
Testing confirms that instructions, access, backups, and technical dependencies still work. Exercises reveal gaps before a real disruption leaves less time to solve them.
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