Re: Select a tape in a TS2900 magazine programmatically

"Need" is in the eye of the beholder.
I have never experienced any of those situations.
The only time I've had to use it as a tape device and not a media library
is when IPLing from tape to do a bare metal restore.
Then again, I am not using any software hardcoded with RSTLIB DEV(TAP01)...

On Mon, Nov 25, 2024 at 1:39 PM Marc Rauzier <marc.rauzier@xxxxxxxxx> wrote:

Le 25/11/2024 à 18:09, Rob Berendt a écrit :

When you have something in WRKMLBSTS you generally do NOT vary on the

tape

devices shown in
WRKCFGSTS CFGTYPE(*DEV) CFGD(*TAP)
They will conflict.

Just a comment FWIW: if I remember well, if you DEALLOCATE a drive
resource you can vary on the associated tape drive device. It might be
needed in case of need to run a tape command with VOL(*MOUNTED) embedded
in a software for instance. I remember some rare circumstances where I
had to DEALLOCATE all but one resources with a TS4500, use CHKTAP
ENDOPT(*REWIND) command to load the appropriate tape in the drive whom
name was TAP01, then DEALLOCATE the resource od TAP01 device so that the
software was able to run (just because it was using a RSTLIB DEV(TAP01)
VOL(*MOUNTED) command). I remember also, after some SAN issues or TS4500
reconfiguration, DEALLOCATE all the resources then ALLOCATE back only
one after the other to check (with CHKTAP) that all drives were available.

And warning, WRKMLBSTS shows the resource name while WRKCFGSTS shows the
device name; sometimes they differ...

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