All technological notes.
disaster
Disaster recovery (DR)
Types of disaster recovery?
Need to define two terms:
RPO: Recovery Point ObjectiveRTO: Recovery Time ObjectiveRPO: Recovery Point Objective
when a disaster strikes, the time between RPO and the disaster is the data loss.
RTO: Recovery Time Objective

RPO and the RTO drives solution architecture decisions.


Faster than Backup and Restore as critical systems are already up

Upon disaster, we can scale to production load



Backup
EBS Snapshots, RDS automated backups / Snapshots, etc…S3 / S3 IA / Glacier, Lifecycle Policy, Cross Region ReplicationSnowball or Storage GatewayHigh Availability
Route53 to migrate DNS over from Region to RegionSite to Site VPN as a recovery from Direct ConnectReplication
RDS Replication (Cross Region), AWS Aurora + Global DatabasesStorage GatewayAutomation
CloudFormation / Elastic Beanstalk to re-create a whole new environmentCloudWatch if alarms failLambda functions for customized automationsChaos