After you deploy I/O filters, a storage provider, also called a VASA provider, is automatically registered for every ESXi host in the cluster. You can verify that the I/O filter storage providers appear as expected and are active.

Successful auto-registration of the I/O filter storage provider triggers an event at the host level. If the storage provider fails to auto-register, the system raises an alarm on the host.


  1. Browse to vCenter Server in the vSphere Web Client navigator.
  2. Click the Manage tab, and click Storage Providers.
  3. Review the storage providers for I/O filters.