2V0-21.23 Question 390
Single answerA VMware administrator is tasked with expanding the capacity of an existing VMFS datastore in a production environment. The datastore is nearing its capacity limit, and the administrator needs to ensure minimal impact on the virtual machines running on it. What is the best course of action to achieve this?
- A
Create a new VMFS datastore and migrate some of the virtual machines to it.
- B
Expand the VMFS datastore by increasing the size of the underlying LUN.
- C
Delete the VMFS datastore and recreate it with a larger capacity.
- D
Use the vSphere Client to dynamically extend the existing VMFS datastore by adding an extent.
Show answer and explanation
Correct answer: B
Explanation
The best way to expand a VMFS datastore with minimal impact in a production environment is to increase the size of the underlying LUN. This process dynamically increases the capacity of the datastore without requiring downtime or significant reconfiguration. While other options might address capacity issues, they either involve higher risks or are less efficient.
- A. Incorrect.
Creating a new datastore and migrating virtual machines can address capacity issues, but it does not expand the original datastore. This would also involve downtime or configuration changes, making it less suitable for minimizing impact.
- B. Correct.
Expanding the datastore by increasing the size of the underlying LUN is the best option. This approach can be done dynamically and is supported by VMFS, making it ideal for a production environment with minimal impact.
- C. Incorrect.
Deleting the datastore would result in data loss and downtime for all virtual machines on it, which is not an appropriate solution for expanding storage in a production environment.
- D. Incorrect.
Adding an extent to the datastore is a valid option for expansion, but it introduces storage fragmentation and complexity. It is generally considered a less optimal solution than expanding the existing LUN.