Deleting Servers

An administrator can delete managed servers from the Installations tree in any of these ways:

Selecting a Server node and clicking the Delete button. Only the selected server is deleted from the Installations tree.
Selecting a Site node and clicking the Delete button. All managed servers that are part of the selected Site are deleted.
Selecting a Site Group node and clicking the Delete button. All managed servers that are part of any Site beneath the selected Site Group node are deleted.

When the administrator deletes a managed server Server that is managed by the Enterprise Manager application., the Enterprise Manager reconfigures every server role Entity that contains a logical, predefined set of components (system software or certified third-party software) deployed in the Data Center and Site Zones that provide specific functionality for the system. that is associated with, or dependent on, a server role that is being deleted.

Enterprise Manager performs this reconfiguration by changing the server role instance data XML files stored in the Framework Database Server role in the Data Center (also known as BPMain) that stores user, organization and group data, including user preferences and security data (roles, permissions, and license information)..

This reconfiguration ensures that all active server roles are no longer associated with, or dependent on, the deleted server roles.

Enterprise Manager also checks to determine whether deleting a server role violates a server role constraint Particular condition or restriction under which a server role must operate.. For example, each enterprise must include one instance of a Database server role. If you try to delete the managed server that contains this role, an error displays on the Configuration Status tab.

Enterprise Manager also deletes the server and server role instance data (including associations) pertaining to the deleted server from the Framework Database.

The Server node and all associated Server Role nodes are also deleted from the Installations tree in the Enterprise Manager user interface.

As noted earlier, deleting a server (or a site or site group) can cause a reconfiguration of the server roles on other servers. When an application depends on, or associates to, a server role being deleted, the application can stop functioning after this reconfiguration of server roles occurs. For this reason, use caution when deleting servers, sites, and site groups.

You can delete a server that has a serial number assigned to it by the Enterprise Manager. However, you cannot change the host name of this server and add it back to the Installations tree.

Once the Enterprise Manager assigns a serial number to a server and stores the serial number in the Framework Database, you cannot add a server with a different host name to the Installations tree that has that same serial number. For more information about serial numbers, see Ensuring a History of Recorder Serial Numbers is Maintained in the Database.

If you delete a server, and then add the server back to the Installations tree, you must completely reconfigure the server after adding it back. (That is, you must manually activate and configure each server role after adding the server back.) The previous configuration of the server cannot be automatically restored.

A deleted server can have active alarms at the time it is deleted. In this case, the alarms remain active and continue to display in the Alarms Dashboard even after the server is deleted. To clear active alarms for a deleted server, you must manually acknowledge the alarms. For more information, see the System Monitoring, Logs, and Alarms Guide.