SAP-C02 · Question #472
A company has an application in the AWS Cloud. The application runs on a fleet of 20 Amazon EC2 instances. The EC2 instances are persistent and store data on multiple attached Amazon Elastic Block…
The correct answer is B. Use Amazon Data Lifecycle Manager (Amazon DLM) to create daily multivolume snapshots of the. The company requires cross-Region backups for 20 persistent EC2 instances with attached EBS volumes, targeting a 1-day RPO and RTO, with optimized operational efficiency and cost, leveraging an existing DR network CloudFormation template.
Question
A company has an application in the AWS Cloud. The application runs on a fleet of 20 Amazon EC2 instances. The EC2 instances are persistent and store data on multiple attached Amazon Elastic Block Store (Amazon EBS) volumes. The company must maintain backups in a separate AWS Region. The company must be able to recover the EC2 instances and their configuration within 1 business day, with loss of no more than 1 day's worth of data. The company has limited staff and needs a backup solution that optimizes operational efficiency and cost. The company already has created an AWS CloudFormation template that can deploy the required network configuration in a secondary Region. Which solution will meet these requirements?
Options
- ACreate a second CloudFormation template that can recreate the EC2 instances in the secondary
- BUse Amazon Data Lifecycle Manager (Amazon DLM) to create daily multivolume snapshots of the
- CUse AWS Backup to create a scheduled daily backup plan for the EC2 instances. Configure the
- DDeploy EC2 instances of the same size and configuration to the secondary Region. Configure
How the community answered
(39 responses)- A3% (1)
- B82% (32)
- C5% (2)
- D10% (4)
Why each option
The company requires cross-Region backups for 20 persistent EC2 instances with attached EBS volumes, targeting a 1-day RPO and RTO, with optimized operational efficiency and cost, leveraging an existing DR network CloudFormation template.
Weekly copying of EBS snapshots would result in an RPO of up to 7 days, which does not meet the requirement of no more than 1 day's data loss.
Amazon Data Lifecycle Manager (DLM) can be configured to automatically create daily multivolume snapshots of the attached EBS volumes and copy them to a secondary region. This meets the 1-day RPO for data loss, is highly automated for operational efficiency, and is cost-effective for managing EBS volume backups, which are key for persistent data.
While AWS Backup is an excellent centralized solution, the requirement for a 'scheduled daily backup plan for the EC2 instances' would capture the entire instance, but DLM for EBS snapshots is more precisely aligned with protecting the data on attached EBS volumes efficiently, as implied by the problem's emphasis on persistent data.
Deploying EC2 instances in a secondary region and configuring replication (a warm standby) would be significantly more expensive than a snapshot-based backup solution for meeting the specified RPO/RTO.
Concept tested: Cross-region EBS snapshot management with DLM for DR
Source: https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/data-lifecycle-manager.html
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