>I would like to know if anyone is running a Virtual Tape-on-Disk Library
>(ie:EMC DLm or any other) as an MTL in an SMStape >environment. Any feedback
>on your results and support of basic processes would be greatly appreciated.
Yes. 2 "boxes" with 8 libraries / environments (sysplxes / monoplexes) shared
in each one. MTL isn't
required, but if you have more than one library you have to do that otherwise
the system wouldn't know
where to mount an input tape from.
When my client migrated from another vendor's solution (mixture of virtual and
physical high capacity
tape) all we essentially did in SMS was to define the libraries and the
storage group (with the 2 libraries) for
each environment and when we were ready to cut over we implemented STORCLAS
routine changes that
included a filtlist for "VIRT_TAPE" that had (previously used) 3490/3590
esoteric and generic names and
pointed all jobs to the new solution.
For example, something similar to this was put at or near the top of the SC ACS
routines:
IF (&UNIT = &VIRT_TAPE) THEN
DO
SET &STORCLAS = 'SCVIRT'
EXIT
END
IF (&ANYVOL = 'REF=ST' OR &ALLVOL = 'REF=ST') THEN
DO
SET &STORCLAS = 'SCVIRT'
EXIT
END
For testing prior to cut over, we had something like this:
WHEN ((&UNIT = &VIRT_TAPE) && (&JOB = &VIRT_TEST_JOBS))
DO
SET &STORCLAS = 'SCVIRT'
EXIT
END
Mark
--
Mark Zelden - Zelden Consulting Services - z/OS, OS/390 and MVS
mailto:[email protected]
Mark's MVS Utilities: http://www.mzelden.com/mvsutil.html
Systems Programming expert at http://expertanswercenter.techtarget.com/
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