Hello All,

I have previously thought that a cumulative incremental backup would
catch everything that has changed since the last successful backup.  
However a cumulative backup (using the archive bit) is basically just a
differential that does not clear the archive bit when complete.  

Does anyone have a suggestion for achieving a schedule that would
function as follows:

full
    <-------diff incrs
    <-----------------cum incr
                                  <---------diff incrs
    <-------------------------------------------------------cum incr
        
....etc

I fill approximately 215 dlt tapes/month with differentials alone.
Restores of small directories require several tapes.  I would like to
need only the last full , weekly, and subsequent days' tapes.

I appreciate any suggestions on how to manage this and compromises that
other departments have made to deal with this issue.

Advance thanks,
Melinda