2V0-21.23 Question 376
Select 3An administrator is managing a production virtual machine (VM) running a critical database workload. To perform a software upgrade on the database, the administrator decides to create a snapshot of the VM. Which of the following actions should the administrator take to ensure best practices are followed when creating and managing this snapshot?
- A
Ensure the snapshot is deleted as soon as the upgrade is validated.
- B
Retain the snapshot for long-term backup purposes.
- C
Quiesce the guest file system before taking the snapshot if possible.
- D
Avoid running the VM from the snapshot for extended periods.
- E
Create multiple snapshots for a single VM to track each step of the upgrade process.
Show answer and explanation
Correct answers: A, C, D
Explanation
When creating and managing snapshots, best practices include deleting snapshots as soon as they are no longer needed, using them temporarily, and ensuring the guest file system is quiesced for consistency. Snapshots are not a replacement for backups and should not be used for long-term storage. Following these practices ensures snapshots are used effectively without impacting VM performance or storage availability.
- A. Correct.
Correct: Snapshots are not intended for long-term use, and retaining them can lead to performance and storage issues. Deleting the snapshot after validation ensures the VM's performance and storage are not negatively impacted.
- B. Incorrect.
Incorrect: Snapshots are not designed for long-term backup purposes. They are a temporary mechanism for testing or recovery and should not replace proper backup solutions.
- C. Correct.
Correct: Quiescing the guest file system ensures that the snapshot captures a consistent state of the VM, especially for applications like databases that require file system integrity.
- D. Correct.
Correct: Running a VM from a snapshot for extended periods can cause performance degradation and storage growth due to the delta disk files. Snapshots should only be used temporarily.
- E. Incorrect.
Incorrect: Creating multiple snapshots for a single VM can complicate management and lead to increased storage consumption. It is better to use a single snapshot and delete it after the upgrade is validated.