You will find the plugin listed under the download page for the specific ONTAP version.
Navigate through the 8.1.3 and 8.2 DOT download pages and find this text which will have a link in it:
Support for OnCommand Core Package or Operations Manager and DataFabric® Manager server multiple-system configurations |
| To enable multiple system configurations across multiple Data ONTAP versions using OnCommand Core Package or Operations Manager and DataFabric Manager server, each version of Data ONTAP starting with Data ONTAP 6.5.1 requires its own plug-in. For information and download instructions for using these products with Data ONTAP operating in 7-Mode, see the Data ONTAP 8.1.3 Operating in 7-Mode Plug-in for DataFabric Manager Server, Used by Operations Manager and OnCommand Core Package page. |