thanks BOB and TOM briefly explanation..thanks again... Under non-sms managed, we have to allocate some double journal VSAM file into different volumes such as IBMA01, IBMB01, (for performance purpose) In SMS managed, the two journal may allocate to same volume after reorg (if use a same pool)....except we fine tune the ACS and use separate storage group. It is difficult to manage the ACS as you know we many double journal files and the ACS may be vey complex. As you know, our boss always ask me the STORAGE/PUBLIC volumes sufficicent for tonight batch processing? how to manage after convert to SMS....haha,,I reply ,there are no more storage/public volume under SMS managed all volumes are private....then he will ask how many volumes you required for each application if no common pool for STORAGE/PUBLIC volume...
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