3.A company needs automated EBS snapshot copies in another AWS Region for disaster recovery. What should it consider when designing its DLM policy?
When designing an Amazon Data Lifecycle Manager (DLM) policy for cross-region EBS snapshot copies, a company should consider:
- Retention Periods: Set separate retention rules and expiration schedules for each target AWS Region independently of the source Region.
- Encryption & KMS Keys: Configure AWS Key Management Service (KMS) encryption keys and permissions for the destination Region if the source volume is encrypted.
- Region Limits: Limit cross-region copies to a maximum of three AWS Regions per single DLM policy.
- Incremental Copy Behavior: Note that deleting the most recent snapshot copy in the destination Region makes the next copy a full, non-incremental transfer