Anyone know where I can information on ISMF.  I am looking for information on 
the following parms for the DATACLAS.

I looked that the following books :

z/OS DFSMS Storage Administration Reference
z/OSDFSMS: Using Data Sets 
z/OS DFSMS Using the Interactive Storage Management Facility

I didn't find the information I was looking for.  Particularly for :
Add'l Volume Amount . . .             (P=Primary, S=Secondary or blank) 

Space Constraint Relief . . . Y      (Y or N)            
  Reduce Space Up To (%)  . . 0      (0 to 99 or blank)  
  Dynamic Volume Count  . . .        (1 to 59 or blank)  

The reason for my question is that I want to set up the DATACLAS for VSAM 
EXTENDED FORMAT.  The dsn is spanned across 30 volumes and it has the following 
definition :
         SHR(2 3) -                                                    
         KEYS(21 0) -                                                  
  VOL(* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *) - 
         INDEXED  -                                                    
         FREESPACE(5 5) -                                              
         CYL(4350 4350)  -                                             
         RECSZ(585 585))                                               

Thanks.

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