2V0-21.23 Question 340
Single answerA VMware administrator is tasked with updating an ESXi host in their environment to the latest patch level. The host is part of a cluster that uses VMware vSphere Distributed Resource Scheduler (DRS) and vSphere High Availability (HA). The administrator wants to ensure minimal disruption to the virtual machines running on the host during the update process. What is the recommended approach to achieve this?
- A
Place the ESXi host in Maintenance Mode and use vSphere Update Manager (VUM) to apply the update.
- B
Manually migrate all virtual machines to another host and then apply the update using the ESXi CLI.
- C
Use vSphere Update Manager (VUM) to update the host without placing it into Maintenance Mode.
- D
Disable DRS and HA in the cluster before updating the ESXi host using vSphere Update Manager (VUM).
Show answer and explanation
Correct answer: A
Explanation
The recommended approach to updating an ESXi host is to use vSphere Update Manager (VUM) while placing the host in Maintenance Mode. This ensures that virtual machines are safely migrated off the host by DRS, minimizing downtime and disruption. VUM automates the update process, significantly reducing the risk of errors compared to manual methods.
- A. Correct.
Correct. Placing the ESXi host in Maintenance Mode ensures that all virtual machines are migrated off the host automatically if DRS is enabled, minimizing disruption. Using vSphere Update Manager (VUM) is the recommended tool for managing ESXi updates.
- B. Incorrect.
Incorrect. Manually migrating virtual machines can be time-consuming and prone to errors, especially in larger environments. vSphere Update Manager (VUM) automates this process when the host is in Maintenance Mode.
- C. Incorrect.
Incorrect. Applying updates without placing the host in Maintenance Mode risks disrupting running virtual machines and can lead to operational issues.
- D. Incorrect.
Incorrect. Disabling DRS and HA is not necessary for updating an ESXi host and could negatively impact cluster functionality. DRS ensures smooth migration of virtual machines during updates.