Dynamic Provisioning of Volumes

PX-CSI enables dynamic provisioning of persistent volumes for Kubernetes applications using the standard StorageClass API. With dynamic provisioning, volumes are automatically created and managed when a PersistentVolumeClaim (PVC) is requested, eliminating the need to pre-create volumes manually.

How it works

You create a StorageClass that specifies the backend type and parameters for volume provisioning. When you create a PersistentVolumeClaim (PVC) that references this StorageClass, PX-CSI automatically creates a new volume on the Pure Storage array based on the specified configuration.

The workflow is:

1. Create a StorageClass with backend parameters (such as pure_block, pure_file, and performance limits).
2. Create a PVC that references the StorageClass.
3. PX-CSI provisions a new volume on the Pure Storage array.
4. Mount the PVC to your pod.

Supported storage systems

PX-CSI supports dynamic provisioning from the following Pure Storage systems:

• FlashArray Block Volumes: Provision block-based persistent volumes for high-performance workloads
• FlashArray File Services: Provision NFS file systems from FlashArray File Services
• FlashBlade File Systems: Provision high-throughput NFS file systems from FlashBlade

Dynamic provisioning also supports topology-aware volume scheduling, helping Kubernetes place workloads on nodes with optimal storage connectivity. For more information, see Use CSI Topology.