Disaster recovery (DR) ni kupanga jinsi ya kupona mifumo na data baada ya kushindwa kwa kiasi kikubwa au taharaka. AWS inatoa mikakati ya DR yenye mabadiliko tofauti kati ya kasi ya kupona, upotevu wa data, na gharama — iliyobainishwa na malengo ya RTO na RPO.
Dhana za msingi: RTO na RPO
RTO (Recovery Time Objective) → how QUICKLY you must recover (acceptable downtime)
RPO (Recovery Point Objective) → how much DATA LOSS is acceptable (recover to how
recent a point — e.g. "at most 5 minutes of data lost")
→ Lower RTO/RPO (faster recovery, less data loss) = higher cost/complexity.
Define these based on business needs; they drive the DR strategy choice.
