After you install I/O filters and deploy them on ESXi hosts, the I/O filter framework configures and registers a storage provider, also called a VASA provider, for each host in the cluster.
Storage providers for I/O filtering are software components that are offered by vSphere. They integrate with I/O filters and report data service capabilities that I/O filters support to vCenter Server.
These data services become visible in the VM Storage Policies interface and can be referenced in a VM policy. You then apply this policy to virtual disks, so that I/O for the disks can be processed by the filters.