One option I know of is that you can create a printer pool (if the print server is a Windows server) and you can assign one or more printers to the pool. The pool is basically a printer name which has more than one printer assigned to it. In this case you would have two printers responding to the print jobs. But: load balancing would occur which means (example: two printers standing next to each other) some documents will be printing on the left and some on the right printer. This can be a problem if you need them to be printer in the correct order. Also: the print job on the defect printer will not be moved to the other printer. So if you have one print job with 2000 pages, this solution will not help you.
HTH
Andreas