When I used TI8, my full backup would be ~40GB and the daily incrementals <1GB. With TI9, the full backup is ~60GB the incrementals are ~20GB. I don't do an defragmenting between the weekly full and the daily incremental backups and eve if I did, why would the incrementals be so large? I don't have that much that changes on my system on a daily basis. I used to keep 2 full weeks of backups on one 200GB drive, now I can barely get 1 week on the same drive. It's almost like the incrementals are really differentials except that they aren't successfully larger. Also, some days the incremental will only be ~250-400MB, what I would expect. Then the next day it's 20+GB. I have compression set to Normal, but will try it at High for tonights backup, but I don't expect that to make much difference.