PAS-C01 Technology Practice Question
An SAP administrator needs to ensure that Amazon EBS snapshots of SAP HANA data volumes are crash-consistent. The HANA database is on a single EC2 instance with multiple EBS volumes. What is the correct approach?
⚠ Common exam trap
It's easy for candidates to assume stopping the instance (Option C) is the only way to ensure crash consistency, overlooking AWS Backup's ability to achieve the same result without downtime using application-consistent snapshots.
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Use AWS Backup with application-consistent snapshots using pre- and post-scripts.
AWS Backup with application-consistent snapshots uses pre- and post-scripts to quiesce the SAP HANA database, ensuring that all EBS volumes are captured in a crash-consistent state. This approach coordinates the snapshot process across multiple volumes without stopping the EC2 instance, maintaining data integrity for SAP HANA's data volumes.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Configure the volumes as a RAID 0 array and take a snapshot of the array.
Why it's wrong here
RAID 0 does not provide built-in snapshot consistency; snapshots of individual volumes are still independent.
- ✗
Take snapshots of each volume individually while the instance is running.
Why it's wrong here
Individual snapshots are not crash-consistent across volumes; writes may happen between snapshots.
- ✗
Stop the EC2 instance, take snapshots of all volumes, then start the instance.
Why it's wrong here
Stopping the instance ensures consistency but causes downtime, which may not be acceptable for production.
- ✓
Use AWS Backup with application-consistent snapshots using pre- and post-scripts.
Why this is correct
AWS Backup can orchestrate snapshots across multiple volumes and run scripts to freeze the filesystem and database, ensuring consistency.
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