The restart operation fails, if you restart the host on which System Manager itself is running. If you want to restart the host, you can do this either through vSphere Web Client or through the Solution Deployment Manager client.
Procedure
On the System Manager web console, click Services > Solution Deployment Manager > Application Management.
In Application Management Tree, select a location.
On the Platforms tab, in the Platforms for Selected Location <location name> area, select a platform.
Click More Actions > Lifecycle Action > Host Restart.
On the confirmation dialog box, click Yes.
The system restarts the host and virtual machines running on the host.
