Stop and start a server to perform maintenance or to apply changes to server settings. You can perform this action as a two-step process (stop and start) or as a single restart process.
            You can stop and start a server from
                    SAP Control Center for servers that are installed on the
                same host as SAP Control Center, as well as servers that are
                installed on different hosts. 
Note: If someone manually shuts the
                    server down, this action triggers multiple errors in
                        SAP Control Center
                    SAP Mobile Server until the console determines that the server is
                    no longer available. This takes approximately 30 seconds to detect. When this
                    occurs you might see multiple Runtime API throws
                        exception errors logged. Wait for the server to come online and log
                    into the server again to resume your administration work.
Note: SAP Control Center requires at least one
                    Application Server node running to work properly. If all Application Server
                    nodes are stopped, the SAP Control Center
                    console tree will be collapsed automatically and the following error message
                    will display: The cluster is unavailable because of no
                        running primary server found.
                Note: You cannot start a Scale-out node from SAP Control Center. If you stop a Scale-out node,
                    you must start it manually.