The plug-in packages are distributed as part of the SnapCenter upgrade.
Examples of SnapCenter configuration files: SnapDriveService.exe.config, SMCoreServiceHost.exe.config, and so on.
For information about upgrading the SnapCenter Plug-in for VMware vSphere, see the NetApp Data Broker SnapCenter Plug-in for VMware vSphere documentation.
After the plug-in package is upgraded, bring the host out of maintenance mode by clicking Activate Schedule.