Kubernetes Storage Myths Overview

In Kubernetes, compute may steal the spotlight — but persistent storage is what truly powers workloads.

From databases to logs, caches to backups, storage is a foundational layer that often gets abstracted away, leading to confusion, poor design decisions, and long-term operational pain.

Unlike traditional VMs or monolithic servers, Kubernetes operates in a dynamic, ephemeral environment:

• Pods are rescheduled.

• Nodes come and go.

• Volumes need to move with workloads.

This demands storage that’s dynamic, portable, and declarative — but also reliable, consistent, and secure.

Kubernetes addresses this through:

• PersistentVolumes (PV) and PersistentVolumeClaims (PVC)

• StorageClasses

• Dynamic provisioning

• CSI (Container Storage Interface)

But understanding these components is only half the battle. The rest is unlearning the myths.

Myths

• Myth 1: K8s Cluster can have only one default Storage Class
• Myth 2: ReadWriteOnce mode allow access to only single Pod
• Myth 3: Kubernetes automatically roll back failed deployment