RPO: Recovery Point Objective.
RTP: Recovery Time Objective.
Disaster Recovery Strategies:
Backup & Restore.
Pilot Light
Warm Standby
Hot Site/Multi Site approach
Backup & Restore:
Very easy
Only cost of storing the data
Can take long to Restore.
High RPO & High RTO.
Pilot Light
A small version of the app is always running in the cloud
Useful for the critical core
Very similar to backup & restore
Faster than backup & Restore as critical systems are already up.
Warm Standby:
Full System is up but at minimum size
Upon disaster we can scale up to prod load
Hot Site / Multi Site approach
Very low RTO (minutes or seconds) → very expensive
Full production scale is running on cloud or on prem
Active Active Status
All AWS Multi Region:
Disaster Recovery Tips:
Backups:
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