A backup is a recoverable copy of data. Disaster recovery also covers the systems, people and procedures needed to resume services after disruption. A successful backup job does not establish how quickly the business can use that data again.
Define RTO and RPO with service owners
Recovery time objective (RTO) describes the recovery-time target for the system or service. Recovery point objective (RPO) describes the point in time to which data must be recovered, expressing the tolerable loss of recent changes. These are planning objectives, not measurements of what a particular backup product has achieved. NIST SP 800-34 contingency-planning guidance.
For example, a finance team might propose a four-hour RTO and a one-hour RPO. Those figures are illustrative, not recommended defaults. Confirm the operational consequences, cost and feasibility with the people who own the process.
Specify when the recovery clock starts and what counts as the service being restored. A virtual machine booting is different from users completing a validated transaction.
Choose a recovery design
Cold, warm and hot recovery arrangements describe different levels of readiness. They do not guarantee fixed recovery times.
| Arrangement | Planning question |
|---|---|
| Cold capacity | How will infrastructure be obtained, configured and restored? |
| Partially prepared capacity | Which components and recent data still need to be brought online? |
| Highly prepared capacity | How are replication, capacity and service activation validated? |
The final result depends on data volume, transfer rate, dependencies, available staff and the failure being simulated. Compare designs using measured exercises and total operating costs.
Include dependencies and clean recovery
Map identity, DNS, networking, certificates, application configuration, databases, licensing and external integrations. Record the sequence in which services must return and the person responsible for each step.
For a suspected compromise, include containment and validation of the recovery environment. Restoring an infected system or reusing compromised administrative access can undermine recovery. CISA recommends offline backups and regular testing of their availability and integrity. CISA StopRansomware guidance.
Run an end-to-end exercise
- Select a credible scenario and document the starting conditions.
- Recover into the intended environment with appropriate isolation.
- Have application owners check data and complete representative tasks.
- Record elapsed time, the recovered data point and manual interventions.
- Compare results with RTO and RPO, then assign corrective actions.
- Test how service returns to the preferred environment after recovery.
Repeat exercises when important dependencies or recovery procedures change. Keep incident communication and any applicable notification process alongside the runbook, with clearly assigned owners.
BustanTech's backup and disaster recovery and managed services can be scoped around these objectives. Discuss a recovery assessment using your service inventory and measured requirements.