Refer to the Exhibit. An administrator is reviewing a vSphere Distributed Resource Scheduler (DRS) enabled Cluster and observes unexpected behavior as shown in the Exhibit. What are three potential…

VMs with locally attached devices such as an ISO mounted from a local datastore or a physical device passthrough are ineligible for vMotion, so DRS cannot migrate them to rebalance the cluster and they remain pinned to their current host.

VM-VM affinity rules, VM-Host affinity or anti-affinity rules, and other DRS placement constraints can block DRS from migrating specific VMs even when a significant load imbalance exists, resulting in a persistently skewed cluster.

vMotion is the underlying transport mechanism DRS uses to live-migrate VMs between hosts; if vMotion networking is not configured or enabled on the hosts, DRS cannot perform any migrations regardless of imbalance severity.

Insufficient cluster resources would cause a specific migration attempt to fail, but persistent visible imbalance shown in the exhibit is more directly caused by migration eligibility constraints such as rules or missing vMotion, not resource exhaustion.

A conservative migration threshold reduces the frequency of DRS recommendations but does not explain VMs being stuck on specific hosts - it is a user-configured sensitivity setting, not a root cause of structural cluster imbalance.