I need a solution
I'm backing up to a dedup device, then have a duplicate job to back it up to tape. I understand that I can't compress data in a duplicate job after it has already been compressed, but here's what I don't get. Deduplicated data is reduplicated when it is transferred off of the dedup device, so at that point it is not compressed in any way. Why can't it be compressed to tape at that point?
Also, this may be a moot point, but why is the hardware compression option available for the duplicate job, but software isn't?