Storage Policy Based Management (SPBM) is a storage policy framework that provides a single unified control pane across a broad range of data services and storage solutions. The framework helps to align storage with application demands of your virtual machines.
SPBM enables the following mechanisms:
Advertisement of storage capabilities and data services that storage arrays and other entities, such as I/O filters, offer.
Bidirectional communications between ESXi and vCenter Server on one side, and storage arrays and entities on the other.
Virtual machine provisioning based on VM storage policies.
As an abstraction layer, SPBM abstracts storage services delivered by Virtual Volumes, Virtual SAN, I/O filters, or other storage entities. Multiple partners and vendors can provide Virtual Volumes, Virtual SAN, or I/O filters support. Rather than integrating with each individual vendor or type of storage and data service, SPBM provides a universal framework for many types of storage solutions and entities.