For IBM Storage and VMware users, the IBM Storage Provider for VMware VASA (referred to as ‘VASA Provider’) improves VMware vSphere’s ability to monitor and automate storage related operations. The VASA Provider is a standard vSphere management plug-in that is deployed once on each vCenter server to interact with vSphere APIs for Storage Awareness (VASA).
Download the VASA provider here
P.S. : In case you wonder what VASA is and how you can use it you environment read this good post from Greg Schulz over here
P.S. 2 : The other Vasa you can find here :-)