Mark,
>
> In VSE I could dump the VTOC(they were pretty small) and determine the
> relative amount of the space being used.  I haven't figured out if there
is
> a way to determine how much of your VTOC or Index is currently being used
in
> MVS.

You can tell how many free dscbs are on a given volume by looking in ISMF
(option 2.1).


> Any ROT for sizing a VTOC and Index for MVS would be greatly appreciated.

If you have access to ICKDSF User's Guide and Reference, appendix C has the
formulas for calculating the size of the vtoc and vtoc index.

Regards,
JOhn

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