W dniu 29.05.2025 o 13:58, Jousma, David pisze:
AUTOSWITCH does NOT require GRS/MIM, etc to work inside or outside the sysplex
any longer. We have same tape drives online to 5 different sysplexes.
Again: it is NOT ABOUT GRS/MIM.
Yes, autoswitch does not require MIM. However autoswitch will not work
across sysplex boundaries.
However there are software products which allow it.
Product names are IBM ATAM (Automated Tape Allocation Manager) and CA-MIA.
Both are licensed (and paid) products.
And still, having dozens of virtual drives allow user to assign the
drives statically and forget about the issue.
--
Radoslaw Skorupka
Lodz, Poland
You’ll see messages such as this when a drive is in use by systems outside the
current sysplex/system
IEF292I UNIT 211E IS ASSIGNED TO A FOREIGN HOST
IEF294I UNIT 211E IS NO LONGER ASSIGNED TO A FOREIGN HOST
However, if you want to share the library between two separate environments,
you need to update DEVSUP00 in all environments to assign unique media types so
that the library can keep the tapes separate between both
mono-plexes/sysplexes. If you do not, you will run into problems because your
tape catalog will get out of sync very quickly, and you may end up scratching,
overwriting tapes from each environment. You’ll need to enter scratch tapes
separately into each environment to get the correct media type assigned to them.
MEDIA1=
MEDIA2=
MEDIA3=
ERROR=
PRIVATE=
Dave Jousma
Vice President | Director, Technology Engineering
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