James C Siano wrote:
> Would cum.incr. be more advantageous for certain situations.
> 
> Or where
> else would it be best used overall from those on the list using that
> formula? 

CumInc is used when you want to minimize the tape mounts for a restore and
also to minimize the risk of data loss in case of a bad tape.  Say your full
was Sunday and it's now Thursday and you need to do a restore.  With
DiffInc, you're mounting Sunday's tape, then the Monday, Tuesday, and
Wednesday tapes.  If Monday was bad, you're dead in the water.  With a
CumInc policy, you'd restore from your Sunday and Wednesday tapes and be
done. 

   .../Ed

Ed Wilts
mailto:ewilts at ewilts.org
Mounds View, MN 55112