Disaster Recovery for EC2 Instances in AWS - Best Practices

Ensure Quick Provisioning of Resources in Another Region

Prev Question Next Question

Question

You have a set of EC2 Instances that support an application.

They are currently hosted in the US Region.

The EBS volume type of the EC2 instances is General Purpose SSD.

In the event of a disaster, you need a way to ensure that you can quickly provision the resources in another region.

How could this be accomplished? (SELECT TWO)

Answers

Explanations

Click on the arrows to vote for the correct answer

A. B. C. D.

Correct Answers - B and C.

Snapshots can be used to create an AMI or template of the underlying instance.

You can then copy the AMI to another region.

You can also take snapshots of the volumes and then copy them to the destination region.

For more information on AMIs and EBS Snapshots, please visit the following URLs:

https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/EBSSnapshots.html https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/AMIs.html

To ensure that you can quickly provision the resources in another region in the event of a disaster, you can perform the following actions:

A. Copy the underlying EBS Volumes to the destination region: This involves copying the entire EBS volume to the destination region. You can use the AWS CLI or the AWS Management Console to copy the volume. However, this can be a time-consuming process, depending on the size of the volume.

B. Create EBS Snapshots and then copy them to the destination region: This involves creating a snapshot of the EBS volume and then copying the snapshot to the destination region. This method is generally faster than copying the entire volume. You can use the AWS CLI or the AWS Management Console to create the snapshot and copy it to the destination region.

C. Create AMIs for the underlying instances and copy them to the destination region: This involves creating an Amazon Machine Image (AMI) of the EC2 instances and then copying the AMI to the destination region. An AMI is a pre-configured virtual machine image that is used to create EC2 instances. This method is useful if you want to create new instances quickly in the destination region. You can use the AWS CLI or the AWS Management Console to create the AMI and copy it to the destination region.

D. Copy the metadata for the EC2 Instances to S3: This involves copying the metadata for the EC2 instances, such as instance type, security groups, and network settings, to Amazon S3. This method is not very useful for disaster recovery purposes, as it does not include the actual data on the instances.

Therefore, options A and B are the correct answers as they both involve copying the data from the current region to the destination region, which can be used to quickly provision the resources in the event of a disaster. Option C is also a viable option for creating new instances quickly, but it involves creating an AMI, which may take more time than copying a snapshot or volume. Option D is not useful for disaster recovery purposes.