I'm in the process of migrating our production LPARs from a z9 to a z10 and I've found a bit of weirdness. Since the z10 has been around awhile, I assume this isn't anything new, but I wonder why it is happening.
I've found that a CMS minidisk that is created while on the z9, is readable by a VM system on the z10. However, if (from the z10) a fle is modified, that file is no longer readable by the CMS system on the z9. I get a DMSXIN104S error code 3 when trying to read the file. Moreover, if (from the z9), I try to write a new file to the disk, I get a different error, and CMS crashes. (All of these z/VM systems are the same by the way, z/VM 5.4.0 RSU 1001.) I've always been able to share disks between systems on different processors before, so I wonder what is different now? I've got a z990 that I still have to maintain and this is going to make life more difficult. Martha
