Scenario: Windows Server 2012 (R2) Essentials, Small Business Server 2011 Essentials and Storage Server 2008 R2 Essentials or Windows Home Server 2011 is always on. 

Intention: Use Lights-Out for backup control and runtime monitoring of client computers. 

Recommended Settings

• Standard delay and action: 5 minutes, Do nothing.

Result 

Lights-Out will not control your server. You can still use the backup features, Wake-On-Lan and the monitoring information of Lights-Out.

How-tos and best practices