# Quota and scheduling behavior for Ray workloads
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Task Governance accounts quota at `RayCluster` granularity. A cluster reserves quota for its full declared size when it is admitted, and holds that quota for its whole lifetime regardless of load. A long-lived cluster that sits idle still counts against your team quota until you delete it.

## Gang scheduling
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Task Governance admits the head and all workers together. A `RayCluster` is not admitted until quota exists for the entire declared size, so a partially scheduled cluster never starts.

## Preemption
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When higher-priority work needs capacity, Task Governance preempts a lower-priority Ray workload. Preemption deletes the whole cluster, including the head.