I'm trying to set up a multi-host environment which shares multiple 3390 volumes. I do NOT have GRS installed. I have a DFHSM host in each image which share a single set of CDS's. One image (OS/390 2.10) is set up with DFHSM as the PRIMARY=YES host and the other image (z/OS 1.6) is PRIMARY=NO. Each DFHSM has a unique hostid and both have HOST=MAIN, CDSR=YES and CDSSHR=YES defined in the startup parms. As the book suggests, I am running both images with the same ARCCMD00 member which has both automigration and autobackup defined for most of the shared volumes. Aside from the occasional RESERVE contention error it works ok but I would like only one image (OS/390) to do the autobackups. The z/OS image doesn't have the necessary tape drives attached yet. Is there a way to set the two DFHSM hosts up so the backup (and possibly the automigration) process is done by only one image? Thanks for any advice.
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