Home > Storage > PowerStore > Virtualization and Cloud > Dell PowerStore: VMware vSphere with Tanzu and TKG Clusters > Block volumes
Block volume storage can be used for Supervisor Control Plane Nodes, Ephemeral Disks, Image Cache, Content Library, and Persistent Volumes. Once deployed, block volumes are discovered by vSphere and formatted with the VMFS file system. The resulting datastores are tagged and associated with a VM Storage Policy so that they can be consumed by vSphere with Tanzu or Tanzu Kubernetes Clusters.
Note: If PowerStore will only be serving block volumes, consider installing PowerStore in block-optimized mode, which disables the NAS and vVol capabilities. This mode can increase the scale or performance of PowerStore since it can devote additional CPU and memory that is no longer needed for file.
To provision a block volume in PowerStore Manager, follow these steps:
The volume performance policy determines the relative performance priority of the volume using a share-based system. Available options are Low, Medium (default), and High. The volume performance policy can be tied to a tag and a VM Storage Policy and used as a storage tiering mechanism. For example,