The following Tandberg Tapes are certified for Linux according to Tandberg's WEB -
www.tandberg.com:
SLR5 [4/8GB]
SLR24 [12/24GB]
SLR32 [16/32GB]
SLR50 [25/50GB]
SLR100 [50/100GB]
TDC 4220 is a SLR4, and will not work unless you install some third party tape mgmt software like e.g.TapeWare which I believe has it's own drivers (I had a lot of headaches about this myself).
Rune