In some situations, you can increase the printing output on your network by using additional resources.
More than one printer may service a single queue. This can be useful when you have similar printers in close proximity by providing increased throughput and avoiding work stoppage if one printer fails.
More than one queue may be assigned to a single printer. Among other things, this allows a full queue attached to a failed printer to be assigned to a running printer, which will then print jobs from both the original and the newly added queue.
While only one print server can run on a server at a given time, that single print server can service up to 255 printers. Performance factors, however, may limit the number of printers that one print server can service effectively.