To display the relationship of real, logical, and alternative servers in your SAP System, choose Tools ® CCMS ® Spool ® Spool Administration ® Spool servers (Devices / servers tab page). Choose Complete hierarchy to display the relationships of all spool servers.

The color coding in the spool server list has the following meaning:

• Active server with spool work process: This is a "real" spool server. It is active (that is, running), has at least one spool work process, and can process output requests.

• Active server with assigned spool service: This is an SAP spool server that is running. It does not, however, currently have any spool work processes. It does have an alternate spool server that is able to substitute for it. Output requests assigned to this server are therefore processed by an alternate server.

• Logical server with assigned spool service: This is a logical server (a name representing a hierarchy of one or more servers). In its logical server and/or alternate server hierarchies (the Mapping and Alt. server fields, respectively), there is a real spool server that can process its output requests. Output requests assigned to this server are therefore processed by another server.

• Inactive server with assigned spool service: This is a "real" SAP spool server that is currently down, but which has a substitute spool server in its Alt. server hierarchy. Output requests assigned to this server are therefore processed by an alternate server.

• Server without assigned spool service: This is a logical or real SAP spool server whose output requests cannot currently be processed. If it is a logical server, then there is no active server in its server hierarchies. If it is a real server, then neither the server nor any alternate server is available for processing output requests.

• Server already represented: This designation shows that a "wraparound" reference is being made to a real or logical spool server. The server is actually located higher in the same server hierarchy. The "wraparound" reference serves to close a loop in a server hierarchy, whereby a lower node refers back to a higher node. For example, the bottom node in a hierarchy might refer to the next higher node as its alternate server.

The spool server list shows relationships between servers as follows:

• "Mapping" relationships, those from a logical server to another logical or real server, are shown with horizontal lines. The spool system follows these lines when it resolves a logical server into a real server that it can use for processing output requests.

• Alternate server relationships, those from a real or logical server to a substitute or replacement server, are shown with vertical lines. The spool system follows these lines when it searches for an alternate server. This search can take place either when a server has become unavailable for processing output requests, or when load balancing is active.

You can display various views of the spool server hierarchy by putting the cursor on a particular server and choosing the following functions:

• Complete hierarchy: Use this function to display all server hierarchies that share any nodes (server references).

• Mapping relationship: Use this function to show only the logical-server and alternate-server hierarchies that proceed from the server that you mark. In effect, you look "down" the server hierarchies from the point of view of the server you mark.

• Usage relationship: Use this function to display all logical-server and alternate-server hierarchies that lead to the server that you mark. In effect, you look "up" the server hierarchies from the point of view of the server you mark.