A solutions architect is designing a disaster recovery (DR) strategy to provide Amazon EC2 capacity in a failover AWS Region.Business requirements state that the DR strategy must meet capacity in the failover Region.
Which solution will meet these requirements?
Purchase On-Demand Instances in the failover Region.
Purchase an EC2 Savings Plan in the failover Region.
Purchase regional Reserved Instances in the failover Region.
Purchase a Capacity Reservation in the failover Region.
Explanations:
On-Demand Instances do not guarantee capacity, especially in disaster scenarios when demand might be high.
An EC2 Savings Plan reduces costs but does not guarantee instance capacity in the failover Region.
Reserved Instances provide cost savings but do not ensure immediate capacity availability in the failover Region.
A Capacity Reservation guarantees EC2 capacity availability in the failover Region, meeting the DR requirements.
I gauge that the answer is:
Purchase a Capacity Reservation in the failover Region.