VCP-VMC 2024 Question 230
Single answerYou are managing a VMware vSphere environment and need to create a snapshot of a virtual machine (VM) before performing a critical software update. The VM is hosting a database application that is running in production. Which of the following is the BEST practice when creating the snapshot?
- A
Quiesce the guest file system when taking the snapshot.
- B
Take the snapshot while the VM is powered off.
- C
Take the snapshot while the VM is powered on to avoid downtime.
- D
Use the 'Snapshot the virtual machine’s memory' option to ensure all memory states are captured.
Show answer and explanation
Correct answer: A
Explanation
When creating snapshots for virtual machines running database applications, it is essential to ensure application consistency. Quiescing the guest file system prepares the application and operating system for the snapshot, avoiding potential data corruption or inconsistencies. This is particularly critical for production workloads, as it allows for safe rollback without impacting the integrity of the database.
- A. Correct.
Quiescing the guest file system ensures that the application and file system are in a consistent state, which is critical for database applications. This is a best practice for production workloads.
- B. Incorrect.
While taking a snapshot while the VM is powered off might ensure consistency, it’s not practical for production environments hosting critical applications, as it involves downtime.
- C. Incorrect.
Taking a snapshot while the VM is powered on is possible, but it doesn’t ensure application consistency, particularly for transactional databases.
- D. Incorrect.
Capturing the VM’s memory state is useful for troubleshooting, but it doesn’t guarantee consistency for database applications, and it increases snapshot size and complexity unnecessarily.