Hi Mauri, yes 3390D is in use.
very simple.....for any 3390B device in MSS-0 you can code matching CU (different name) and 3390D devices in another MSS .. i.e. you could code in MSS-1 or MSS-2 the 3390A ALIAS devices are not real DASD, so you only need one set. Regards Bruce Hewson ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN