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Which of the below mentioned service configurations doe…

An organization is setting up an application on AWS to have both High Availabilty (HA) and
Disaster Recovery (DR). The organization wants to have both Recovery point objective (RPO)
and Recovery time objective (RTO) of 10 minutes. Which of the below mentioned service
configurations does not help the organization achieve the said RPO and RTO?

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A.
Take a snapshot of the data every 10 minutes and copy it to the other region.

B.
Use an elastic IP to assign to a running instance and use Route 53 to map the user’s domain with
that IP.

C.
Create ELB with multi-region routing to allow automated failover when required.

D.
Use an AMI copy to keep the AMI available in other regions.

Explanation:
AWS provides an on demand, scalable infrastructure. AWS EC2 allows the user to launch OnDemand instances and the organization should create an AMI of the running instance. Copy the
AMI to another region to enable Disaster Recovery (DR) in case of region failure. The
organization should also use EBS for persistent storage and take a snapshot every 10 minutes to
meet Recovery time objective (RTO). They should also setup an elastic IP and use it with Route
53 to route requests to the same IP. When one of the instances fails the organization can launch
new instances and assign the same EIP to a new instance to achieve High Availability (HA). The
ELB works only for a particular region and does not route requests across regions.
http://d36cz9buwru1tt.cloudfront.net/AWS_Disaster_Recovery.pdf

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