>I'd like to do a Move Data on a volume which but before I do the Move Data,
>I'd like to ensure all the required volumes for the move are in the library.

Ray - Move Data would obviously involve the subject volume itself, and
      any volumes containing files that spanned into (the front of) or
out of (the back of) the volume.  This would be identifiable by the
Segment number in Query CONtent _volname_, or the corresponding Select,
being other than 1/1.  For spanning files, you would then have to perform
a Content table search on the related segment.  (A tape in Filling status
would obviously have no span-out-of segment on another volume.)

  Richard Sims, BU