Ace the VMware VCP-DCV Challenge 2025 – Virtualization Mastery Awaits!

During a vCenter Server upgrade, if an ESXi 6.x host fails, it is designed to ensure that High Availability (HA) features come into play to maintain uptime for virtual machines. When HA is configured in a cluster, it actively monitors the hosts and the virtual machines running on those hosts. If a host fails during the upgrade, HA will automatically detect this failure and attempt to restart the affected virtual machines on one of the available hosts in the cluster. This process is known as failover and is one of the key benefits of using HA in a VMware environment.

The failover action by HA ensures that the virtual machines remain operational, minimizing disruption and maintaining service availability, which is especially critical during upgrade scenarios where outages could significantly impact the business operations. This proactive approach by HA serves to enhance the overall resilience and reliability of the virtualized environment, making it particularly crucial during times of planned maintenance such as upgrades.

In contrast, HA’s functionality is not halted or impaired during a vCenter Server upgrade, which rules out any options suggesting that HA would be unavailable or would not execute failover actions until after the completion of the upgrade. Additionally, vMotioning virtual machines is not applicable in a scenario where a host has failed; rather, it's