Which tape management system? With CA-1, a tape is returned to the scratch pool 
when every dataset on the tape expires. If the tape is SMS managed, then the 
CA-1 system communicates to OAM to expire the tape to SMS. OAM then 
communicates to our VTS/ATL to set that volume to SCRATCH status in the tape 
library.

When CA-1 expires a dataset on a tape, part of the process, at least as we have 
it set up, is to uncatalog the dataset name - assuming the dataset is 
catalogued on the given tape volume. I don't know how DFSMSrmm does its 
expiration processing.

--
John McKown 
Systems Engineer IV
IT

Administrative Services Group

HealthMarkets(r)

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(817) 255-3225 phone * 
john.mck...@healthmarkets.com * www.HealthMarkets.com

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> -----Original Message-----
> From: IBM Mainframe Discussion List 
> [mailto:IBM-MAIN@bama.ua.edu] On Behalf Of Uriel Carrasquilla
> Sent: Thursday, March 29, 2012 8:51 AM
> To: IBM-MAIN@bama.ua.edu
> Subject: Re: catalogued datasets in tapes and expiration dates
> 
> Let's say I have a tape with multiple datasets inside.
> Some datasets may be catalogued, some may not.
> I can understand the once not catalogued when they expire 
> they no longer hold the tape from going to the scratch pool.
> But what about those cases when the catalogued datasets hit 
> their expiration date? what happens?
> am I also correct in assuming that the entire tape with all 
> the stacked datasets is being held until the last dataset in 
> it expires? 
> Please share your thoughts.
> 
> ----------------------------------------------------------------------
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