Tommy, I suggest that you read up on the use of "guaranteed space", an attribute of STORAGE CLASS. When you specify a STORCLAS that has that attribute, coding VOL=SER=XXXXXX *is honored* and the dataset will be allocated on the SMS-managed volume you direct it to.
This way, you can use a data filter list and in the SELECT logic that tests for that filter list obtain a match condition and assign a STORCLAS. Assigning a STORCLAS is a requirement for SMS management. For explicit dataset placement once you assign a STORCLAS with the guaranteed space attribute, the STORAGE GROUP must contain the volser you specified and it will allocate it to that volume. This way, you obtain the dataset separation you desire. Each of those journal file datasets can be in the same STORCLAS filter list *because* your JCL is going to direct it to the appropriate (but different) volume in the *same* storage group. No need for separate groups; only separate volumes within the same storage group. That way, you do have a common pool AND can still achieve dataset separation when needed. ACS routines "can be" very complex, but can also be made very simple. Map out all the conditions you feel are exceptions and use the storage class routine to handle them accordingly. Bob Richards -----Original Message----- From: IBM Mainframe Discussion List [mailto:[EMAIL PROTECTED] On Behalf Of Tommy Tsui Sent: Thursday, August 17, 2006 7:22 PM To: [email protected] Subject: Re: How can the ACS routine to bypass checking the storage volume datasets? 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... LEGAL DISCLAIMER The information transmitted is intended solely for the individual or entity to which it is addressed and may contain confidential and/or privileged material. Any review, retransmission, dissemination or other use of or taking action in reliance upon this information by persons or entities other than the intended recipient is prohibited. If you have received this email in error please contact the sender and delete the material from any computer. Seeing Beyond Money is a service mark of SunTrust Banks, Inc. [ST:XCL] ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [EMAIL PROTECTED] with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html
