Storage virtualization overview

At a low level, HPE Storage operating systems divide physical drives into allocation units called chunklets, which are used to create logical drives. Chunklets and logical drives are not visible to users.

Users create common provisioning groups (CPGs) which are pools of storage space that define storage properties such as RAID type and physical drive device type. Users create virtual volumes from common provisioning groups and export the virtual volumes to hosts. Exporting a virtual volume makes it visible to the host OS and host applications.

HPE Storage operating systems automatically create the logical drives that are required for common provisioning groups. A key feature of logical drives is that their size is automatically increased when data that is written from hosts approaches capacity thresholds on the storage system.

Learn more: Hosts, Virtual volumes overview, Exported virtual volumes (VLUNs), Logical drives, Chunklets, Physical drives and device types.

You can use HPE SSMC to perform many Block Persona tasks. Learn more: Block Persona screens, views, and actions summary.