Disaster recovery is not a doomsday plan. It is a design choice you make before an outage, so you can respond with clarity instead of panic. For small and mid-size teams, the goal is not perfect uptime. The goal is known recovery time, tested backups, and a process everyone understands.
This guide outlines a practical DR approach for cloud systems without a heavy program.
1. Define RTO and RPO in plain language
RTO (recovery time objective) is how long you can be down. RPO (recovery point objective) is how much data you can afford to lose.
Practical steps:
- Assign RTO and RPO targets for each critical service.
- Use rough tiers (for example, 15 minutes, 4 hours, 24 hours).
- Document these targets in a short table and share it with leadership.
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2. Pick a DR strategy that fits the service
There is no single DR architecture. Match the approach to the business need.
Common patterns:
- Backup and restore for low-risk workloads.
- Pilot light for core systems where recovery should be faster.
- Warm standby when you need quicker failover.
- Multi-site active/active for strict uptime requirements.
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3. Make backups reliable and testable
Backups that are never restored are a false sense of safety.
Practical steps:
- Automate backups with AWS Backup or service-native tools.
- Store backups in a separate account or region.
- Test restores quarterly with a simple runbook.
References:
4. Plan for regional failure
Single-region outages are rare, but they happen. Your plan should say what you do if a region is down.
Practical steps:
- Identify which systems must survive a region outage.
- Use cross-region replication for critical data.
- Set up DNS failover with Route 53 health checks.
References:
- AWS: Route 53 health checks
- [AWS: S3 Cross-Region Replication](: https://docs.aws.amazon.com/AmazonS3/latest/userguide/replication.html)
5. Keep the runbook short and tested
When an outage hits, a short runbook beats a thick binder.
Practical steps:
- Write a one-page recovery guide for each critical service.
- Include the order of operations and decision points.
- Run a tabletop exercise twice a year.
6. Make ownership explicit
Recovery is a people problem as much as a technical one.
Practical steps:
- Assign a DR owner for each service.
- Define escalation paths and communication channels.
- Keep contact info in a place that does not depend on your primary system.
7. Monitor the signals that matter
If you want fast recovery, you need early detection.
Practical steps:
- Set alerts for service health checks and replication lag.
- Monitor backup failures and snapshot age.
- Alert on DNS failover events.
Reference:
Closing thought
Disaster recovery is about preparation, not perfection. Clear targets, reliable backups, and a tested runbook are enough to protect most teams from the worst outcomes.
If you want help designing a DR plan that fits your systems and budget, we can help. We focus on practical steps that reduce downtime without heavy overhead. Reach out through our consulting page to start a quick conversation.