On Wednesday, 09/02/2009 at 02:43 EDT, "Romanowski, John (OFT)" <[email protected]> wrote: > If you must DEDICATE full packs then it'd be more reliable to DEDICATE by > address instead of volid
Better is to use MDISKs with the DEVNO <rdev> option; turn off caching for the volume if appropriate. These volumes do not appear in SYSTEM CONFIG as user volumes since you cannot predict the volser. You will see them attached to SYSTEM while they are being used. I also recommend Offline_At_IPL for any DEVNO or DEDICATEd dasd devices. Vary them online in AUTOLOG1. Do not depend on the order in which CP recognizes devices. That's great until the first time the lower-numbered device is physically offline the next time you IPL. Alan Altmark z/VM Development IBM Endicott
