DR Systems — Complete Guide
DR Systems — Complete Guide: free step-by-step lesson with examples, common mistakes, and interview tips — part of AWS Cloud Tutorial on Toolliyo Academy.
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AWS Cloud Tutorial · Lesson 79 of 100
DR Systems
Core services ✓ → Projects
Projects · 2 — Deploy · ~10 min · AWS — Cloud-Native & Microservices
What is this?
Disaster recovery systems restore operations after region or AZ failure using backup, replication, and runbooks with defined RTO and RPO.
Why should you care?
AwsVerse banking SLA requires four-hour RTO with fifteen-minute RPO for core ledger.
See it live — copy this example
Run in AWS CloudShell / local AWS CLI v2, or follow the matching steps in the AWS Console (Free Tier).
aws backup create-backup-plan \
--backup-plan '{"BackupPlanName":"awsverse-rds-daily","Rules":[{"RuleName":"DailySnapshots","TargetBackupVaultName":"awsverse-vault","ScheduleExpression":"cron(0 5 * * ? *)","Lifecycle":{"DeleteAfterDays":35}}]}'What happened?
- AWS Backup plan snapshots RDS daily at 05:00 UTC retaining 35 days.
- Cross-region copy vault enables DR restore in secondary region.
Practice next
- Define RTO/RPO with business owners.
- Enable RDS automated backups and cross-region copy.
- Document and test restore runbook quarterly.
- Add AWS Elastic Disaster Recovery for EC2.
- Automate DR drill with Systems Manager documents.
Remember
RTO = downtime tolerance. RPO = data loss tolerance. Test restores not just backups.
AwsVerse DR drill Q2
Simulate ap-south-1 unavailable.
Outcome: Team restores RDS snapshot in ap-southeast-1 within 3 hours.
Interview prep for this lesson
Practice these questions aloud after reading—each links to a full structured answer.
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