What does VUM's integration with DRS and HA facilitate during updates?

VUM, or VMware Update Manager, integrates seamlessly with Distributed Resource Scheduler (DRS) and High Availability (HA) to facilitate nondisruptive host updates. This integration allows VUM to perform updates on hosts within a cluster while ensuring that the overall availability of the running virtual machines is maintained.

When updates are initiated through VUM, DRS can intelligently migrate virtual machines off the host that is being updated, utilizing resource balancing and load distribution. This ensures that there is no impact on performance or availability during the update process. After the updates are completed, DRS can bring the host back online and migrate the virtual machines back to the updated host. This whole process can occur without significant downtime, allowing for smooth operations in a production environment.

The combined functionality of VUM with DRS and HA helps maintain a high level of service availability, ensuring that hosts can be updated without bringing down the workloads they are running. This design is crucial in environments where uptime is critical, and administrators need to mitigate the impact of updates on service delivery.