If LPAR A and LPAR B are intended to be roughly equal as Mr. Sample and Pedro suggest, most, if not all, the DASD is shared between the two LPARs. If LPAR A and LPAR B are intended to be isolated from each other, as is sometimes the case, then little if any, DASD is shared and Mr. Sample's and Pedro's idea won't work, and it may be difficult to submit a job on A to run on B. Since we do not know your configuration, we cannot make a reliable analysis and any solution we propose will be faulty.