Allan,

I checked.  The VVDS is at the beginning of the volume.

--------------------------------------------
On Wed, 10/22/14, Staller, Allan <allan.stal...@kbmg.com> wrote:

 Subject: Re: QUESTION ABOUT VSAM / VSAM EXTENDED
 To: IBM-MAIN@LISTSERV.UA.EDU
 Received: Wednesday, October 22, 2014, 10:51 AM
 
 Sounds about right. Doing
 the math (roughly) at 2.8 gb/volume (3390 mod3).
 Non extended VSAM has a upper limit of 4gb
 
 2.8GB       
    3339(cyl) 
 ___   =        ________
 
 4.0GB          x(cyl)
 
 
 2.8x =
 4*3339
 
 X=4770 cyls.
 Allowing for VTOC, VTOCIX, VSAM overhead, INDEX, CISIZE,....
 I would accept 4350 as reasonable .
 
 You might try to map the volumes and see if the
 VVDS is in the "middle" of the pack...
 
 HTH,
 
 
 <snip>
 What
 is the maximum number of cyclinders that can be used to
 define a dsn that is not VSAM EXTENDED.  I think it is 4400
 cylinders.  I was trying to allocate a dsn at 4500 4500 but
 I kept on abending with IGD17273I ALLOCATION HAS FAILED FOR
 ALL VOLUMES........
 
 Finally
 I was able to allocate the dsn at CYL(4350 4350).
 </snip>
 
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