Let me add to my post - if you read abut SMF CI Size in member ACHAP03 of the MXG source/documentation library, you will see a very good discussion of the trade-off between DASD space and CISIZE in MANx datasets. Apparently SMF doesn't do VBS in the MANx datasets in the same way "regular" VBS is done, and can waste space because of how it does it. The ANALSMF program includes what they call an "SMF Simulator" that attempts to help you find the optimum CISIZE for the SMF records you produce.
There are also a lot of other SMF tips in ACHAP03 that are worth reading. If you don't have MXG perhaps you could contact Dr. Merrill and ask if he would share that information as a separate document or if he has done a SHARE presentation about it. ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN