Hello @gavin
Print Server Sizing
http://technet.microsoft.com/en-us/library/cc781857(WS.10).aspx
“It is important to note that the primary limitation of the print server in this configuration is related to remote management and not the result of constraints imposed by the print server hardware or core spooler component. Specifically, when viewing and sorting columns in the Printers and Faxes folder, one may begin to experience delays if the server is hosting more than 1,500 printers.”
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Best Regards
Karlie