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On Tuesday, August 5th, 2025 at 10:44 AM, Pew, Curtis G 
<[email protected]> wrote:

> [Note: Jay and I work on the same team; he joined us earlier this year.]
> 
> On Aug 5, 2025, at 4:22 AM, Dejan Stamatovic [email protected] wrote:
> 
> 
> Hi Jay,
> 
> Unit=VIO is not mandatory on a z/OS system.
> 
> If you like to use it so much, you can reintroduce it for the sake of old JCL.
> 
> I have seen many customers replace this by using DFSMS ACS routines and 
> directing unit=VIO to temporary data sets allocation usually using a separate 
> DFSMS Storage group.
> 
> unit=VIO is anyway not to be used for allocation of DFSORT temporary data 
> sets so if you stop using it, this might even simplify your z/OS environment 
> by not using an additional esoteric name.
> 
> This is up to you.
> 
> In fact, “The SMS ACS routines will redirect it to VIO if you just leave the 
> UNIT out” was my initial response. The problem is Jay is installing a vendor 
> product that has “UNIT(VIO)” hard coded in a call to BPXWDYN. To which my 
> response was, “do they know it’s the 21st century now?”
> 
> 
> --
> Curtis Pew, Mainframe Specialist
> The University of Texas at Austin | ET Campus Solutions
> 
> 
> 
> 
> 
> 
> 
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