Hi all,

I found there are some different between use TSO option 3.2 to allocate a
data set compared with use IEFBR14. why?
for example I try to allocate a dataset with SPACE=(CYL,100,100). what I get
...

1. use TSO 3.2 allocate a SMS managed dataset
1st extent cylinders:  100
Secondary cylinders :100

2.  use IEFBR14 batch job to allocate the same SMS managed dataset
1st extent cylinders: 84
Secondary cylinders : 84

the storage group threshold:
Allocation/migration Threshold: High . . 85  (1-99)      Low  . . 80
(0-99)


is it related to the threshold setting ?

Best regards

Tommy

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