Dear MVS experts , 

I am a bit surprised to find the MVS Programming  Hiperbatch Guide in z/os 1.13 
docs , as far as i know this feature uses expanded storage and this disappears 
with 64 bits ? 
(Also soem products still use hiperspaces and dataspaces  i suppose that they 
are now backed by virtual memory ? ) 

Thank you to help open a DB2's guy mind.  

Regards  

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