My recommendation remains the same: changing backup products is a bad thing unless you're doing it to meet requirements. Changing due to cost of licensing is a really bad idea and won't save you money, will probably cost you money, and will result in instability and a lot of pain.
I will two of the comments in Stuart's excellent response: >Networker ... doesn't ... support the idea of staging to disk The versions you used didn't have it, but current versions do support disk staging. Backups sent to a disk staging device will be automatically copied to tape to make room for the next set of backups, and will be kept on disk until space is needed. >I don't think Networker has anything analogous to TSM's scratch >pool True, but you can tell it to reclaim from other pools. Meaning if pool A is out of tapes, and pool B has tapes, it will grab a tape from pool B and use it.
