An Artificial Intelligence startup company has used lots of EC2 instances. Some instances use the SQL Server database, while others use Oracle. As the data needs to be kept secure, regular snapshots are required. They want SQL Server EBS volume to take a snapshot every 12 hours. However, for Oracle, it only needs a snapshot every day. Which option below is the best one that the company should choose?

Answer options:

A.Use a free third-party tool such as Clive to Manage EC2 instance lifecycle. It can design various backup policies for EC2 EBS volumes. Add a 12 hours backup policy to SQL Server EBS volumes and a 24 hours backup policy to Oracle EBS volumes.
B.Add a prefix to the name of both SQL Server and Oracle EBS volumes. In the AWS Data Lifecycle Management console, create two management policies based on the name prefix. For example, add a 12 hours backup schedule to EBS volumes with a name starting with “SQL” and add a 24 hours backup schedule to EBS volumes with a name starting with “oracle”.
C.Create a dedicated Lambda function to differentiate EC2 EBS volumes and take snapshots. Set up Cloudwatch Events Rules to call the lambda so that the function runs every 12 hours for SQL Server and 24 hours for Oracle.
D.Add different tags for SQL Server and Oracle EBS volumes. In the AWS Data Lifecycle Management console, create two management policies based on the tags. Add a 12 hours schedule to SQL Server lifecycle policy and a 24 hours schedule to Oracle lifecycle policy

Correct Answer – D
 
Amazon Data Lifecycle Manager (Amazon DLM) should be considered if automating snapshot management is required (https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/snapshot-lifecycle.html).One thing to note is that the DLM policy has used Tags to choose EBS volumes.
Option A is incorrect. Because although this may work, it is not a straightforward solution as DLM.
Option B is incorrect. Because prefix in the name is incorrect. Tags (name and value) are used to choose EBS volumes.
Option C is incorrect. Because it brings extra cost and is not as easy as DLM. The question asks for the solution without extra cost.
Option D is CORRECT. Because two management policies in DLM can meet the needs.
For example:
For SQL Server EBS volume:
For Oracle EBS volume: