As far as I’m concerned, the NetApp VSS Hardware Provider called DataONTAP is delivered and installed as a part of NetApp SnapDrive for Windows. SnapDrive is licensed per storage controller, or per physical Windows Server.
SnapDrive for Windows can be downloaded by licensed customers from http://now.netapp.com
For further information regarding SnapDrive for Windows please see the following article: http://www.netapp.com/us/products/manag ... ndows.html
Hope this helps.