In that case wouldn't BLSR (or LSR for CICS) be a better option? Simply increasing the Bufsp value will eliminate some of the extraneous I/O for the Index during Direct processing.
-----Original Message----- From: McKown, John [mailto:john.mck...@healthmarkets.com] Sent: Wednesday, June 20, 2012 12:41 PM To: IBM-MAIN@listserv.ua.edu Subject: Re: Splitting the DATA and INDEX Components of Extended Addressing Dataset > -----Original Message----- > From: IBM Mainframe Discussion List > [mailto:IBM-MAIN@listserv.ua.edu] On Behalf Of O'Brien, David W. > (NIH/CIT) [C] > Sent: Wednesday, June 20, 2012 11:12 AM > To: IBM-MAIN@listserv.ua.edu > Subject: Re: Splitting the DATA and INDEX Components of Extended > Addressing Dataset > > George, > > It might help to know what you're trying to accomplish by doing this. > > Given the size of today's disks, there is no guarantee that placing > the Data and Index on separate Logical volumes will in turn place them > on separate physical volumes. > > Regards, > Dave O'Brien Perhaps (guessing) why the OP wants them on separate z/OS volumes is for I/O overlap (I/O to both data and index simultaneously) and PAV is not an option (like here - DASD is too old). -- John McKown Systems Engineer IV IT Administrative Services Group HealthMarkets(r) 9151 Boulevard 26 * N. Richland Hills * TX 76010 (817) 255-3225 phone * john.mck...@healthmarkets.com * www.HealthMarkets.com Confidentiality Notice: This e-mail message may contain confidential or proprietary information. If you are not the intended recipient, please contact the sender by reply e-mail and destroy all copies of the original message. HealthMarkets(r) is the brand name for products underwritten and issued by the insurance subsidiaries of HealthMarkets, Inc. -The Chesapeake Life Insurance Company(r), Mid-West National Life Insurance Company of TennesseeSM and The MEGA Life and Health Insurance Company.SM ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN
