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Interactive Explainer

Persistent Volumes & StorageClasses

Kubernetes storage abstraction: PersistentVolumes, PersistentVolumeClaims, StorageClasses, and CSI drivers.

🎯Key Takeaways
PV = cluster storage resource; PVC = pod storage request
StorageClass enables dynamic provisioning
CSI: vendor-neutral storage driver standard

Persistent Volumes & StorageClasses

Kubernetes storage abstraction: PersistentVolumes, PersistentVolumeClaims, StorageClasses, and CSI drivers.

~1 min read
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What you'll learn
  • PV = cluster storage resource; PVC = pod storage request
  • StorageClass enables dynamic provisioning
  • CSI: vendor-neutral storage driver standard

K8s Storage Model

PersistentVolume (PV): a piece of storage provisioned by an admin or dynamically by a StorageClass. PersistentVolumeClaim (PVC): a pod's request for storage (size, access mode). StorageClass: template for dynamic provisioning (e.g. gp3 on EKS, pd-ssd on GKE). CSI: standard driver interface for storage vendors.

Key takeaways

  • PV = cluster storage resource; PVC = pod storage request
  • StorageClass enables dynamic provisioning
  • CSI: vendor-neutral storage driver standard

Related concepts

Explore topics that connect to this one.

  • StatefulSets & DaemonSets
  • ConfigMaps & Secrets Management
  • secrets encryption vault

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ConfigMaps & Secrets Management

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