whats the issue?
im using Diavolo 2000, my compression is set to No compression when using a tape backup device like AIT or DLT, as the device will deal with compression automatically.
Other options are available are:
For 7mhz - Fast.50
For 14mhz - Fast.100
For 25mhx - Nuke.100
Data encryption algorithm - Feal.8
Hope this helps