I use the stubby volumes (less than a mod-3) at the end of the string for exactly this reason.
You can DEDICATE the volumes as 200 and 300 in the directory, but then you can't get them attached anywhere else. I define them this way now: MDISK 0200 3390 DEVNO 461F MWV MDISK 0300 3390 DEVNO 641F MWV The magic is the combination of a DEVNO fullpack with the V - VM will do virtual reserve release that gets pushed to the real bit on the device - it works both within a single VM system and across CECs as far as I can tell. I'm sharing the DB across 6 CECs this way. -- Jay Brenneman