Cloud Intermediate
Cloud Disaster Recovery — Strategies¶
Disaster RecoveryRTORPOBusiness Continuity 5 min read
DR strategies, RTO/RPO, multi-region setup and testing.
Strategies¶
- Backup & Restore — RPO/RTO hours, cheapest
- Pilot Light — core infra ready, RPO minutes, RTO tens of minutes
- Warm Standby — scaled-down copy, RPO seconds, RTO minutes
- Active-Active — RPO/RTO ~0, most expensive
Multi-Region¶
# RDS cross-region replica
resource "aws_db_instance" "dr" {
provider = aws.us_east_1
replicate_source_db = aws_db_instance.primary.arn
instance_class = "db.r6g.large"
}
# + S3 CRR + ECR replication + Route 53 failover
Testing¶
- Tabletop — quarterly
- Functional failover — semi-annually
- Full-scale — annually
- A DR plan without testing = no plan at all
Summary¶
Define RTO/RPO per app, choose the strategy, test regularly.
Need Help with Implementation?¶
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