What is the advantage of using Persistent Volumes (PVs)?

The advantage of using Persistent Volumes (PVs) is that they provide a way to manage storage resources outside the lifecycle of individual Pods. This means that even if Pods are started, stopped, or deleted, the data in the PV persists.

In Kubernetes, a Pod is a temporary entity designed to host applications, and its lifecycle is tied to the Pod itself. If a Pod is deleted, any data stored within the Pod is also lost unless it is stored in a Persistent Volume. By using PVs, applications can ensure that important data remains accessible, even when Pods are replaced or scaled.

Persistent Volumes abstract the underlying storage and allow for greater flexibility in storage management. They are defined in the cluster, and developers can request storage resources using Persistent Volume Claims (PVCs), enabling dynamic provisioning and improved utilization of storage services beyond the ephemeral nature of Pods, ultimately leading to a more resilient application architecture.