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Are Space Parameters ignored for Tape Datasets?

 
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vak255
Intermediate


Joined: 10 Sep 2004
Posts: 384
Topics: 79
PostPosted: Wed May 09, 2007 12:56 am    Post subject: Are Space Parameters ignored for Tape Datasets? Reply with quote
A strange doubt....I have coded

/SORTOUT DD DSN=CN.DEASRA.SRS(+1),
// DISP=(NEW,CATLG,CATLG),
// SPACE=(CYL,(2500,500),RLSE),
// UNIT=(VTSTAPE,,DEFER),
// MGMTCLAS=MC0030,
// DCB=(PSDSCB,DSORG=PS,RECFM=VB,LRECL=2004)

To my surprise it ran fine...no errors. I believe SPACE is ignored for TAPE.
Any Views on this??
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expat
Intermediate


Joined: 01 Mar 2007
Posts: 475
Topics: 9
Location: Welsh Wales
PostPosted: Wed May 09, 2007 1:20 am    Post subject: Reply with quote
Yes it is, and once again it's time for me to get on my "Set up SMS properly horse"
Code:

/SORTOUT DD DSN=CN.DEASRA.SRS(+1),
// DISP=(NEW,CATLG,CATLG),
// SPACE=(CYL,(2500,500),RLSE),
// UNIT=(VTSTAPE,,DEFER),
// MGMTCLAS=MC0030,
// DCB=(PSDSCB,DSORG=PS,RECFM=VB,LRECL=2004)

OK, why use DISP=(NEW,CATLG,CATLG) - if the job fails you may, or may not have an invalid +1 GDG created

Coding MGMTCLAS - oh boy, you'd never be allowed to do that in my SMS shop, unless you were authorised

If SMS is set up properly and a DATACLAS is allocated to every GDG be it SMS, non SMS, TAPE or DASD, there is NO NEED for a model / pattern DSCB.

In a properly set up environment
Code:

//SORTOUT DD DSN=CN.DEASRA.SRS(+1),
// DISP=(NEW,CATLG,DELETE),
// UNIT=(VTSTAPE,,DEFER),
// RECFM=VB,LRECL=2004

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vak255
Intermediate


Joined: 10 Sep 2004
Posts: 384
Topics: 79
PostPosted: Wed May 09, 2007 2:02 am    Post subject: Reply with quote
I will keep that in mind. Thank you so much.
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