Different disaster recovery strategies in AWS
When it comes to DR in AWS, you have four primary approaches to choose from, each offering a unique balance of cost, complexity, and resilience. At one end of the spectrum, you can opt for a simple and cost-effective approach by making regular backups of your data. At the other end, you can implement more complex strategies that leverage multiple active Regions to ensure high availability and fault tolerance. The following figure highlights different DR strategies with their RTO/RPO values:
Figure 14.1 – DR modes
We will now review each of the DR strategies shown in the preceding figure, from high RTO/RPO to low RTO/RPO value.
Backup and restore
At the heart of any effective DR strategy lies a robust backup and restore process, which serves as a cornerstone for both normal recovery and DR scenarios. This process enables you to restore your data within a single-Region architecture or replicate it...
