I'd like to pool two printers that have parallel connections to a 3-port HP 500x JetDirect server. I can print to each of the individual printers by specifying the PRINTERNAME=raw1 or raw2 in the gateway load string of two printer agents.
However, iPrint doesn't see any change to the state of the printer agent when the printer is turned off. I guess because the LPD queue on the JetDirect is still available.
Is there a means of accomplishing printer pooling (with fault tolerance) in this scenario?

Thanks in advance,