# What does podManagementPolicy: Parallel change in a StatefulSet?

Kubernetes, Hard (Expert), Concepts. https://k8wiz.com/uquiz/what-does-podmanagementpolicy-parallel-change-in-a-statefulset

- A. Rolling updates replace every pod at the same time instead of one by one
- B. All replicas mount one shared PersistentVolumeClaim
- C. Scaling starts and stops pods together instead of in ordinal order
- D. Each pod gets its own Service instead of a shared headless one

**Answer:** Scaling starts and stops pods together instead of in ordinal order

**Explanation:** The default OrderedReady policy starts pods in order (0, 1, 2), waits for each to be Running and Ready, and removes them in reverse order. Parallel drops that ordering for scaling. It doesn't change rolling updates, which still replace pods one at a time in reverse ordinal order.