Using NW6.5 SP3 with Arcserve 9.01 for a while now on my Sony SDX-500v.

Until now the anount of data backing up has been under 50gb which is the
native capacity of a Sony SDX-500v AIT2 tape, but recently we have
exceeded that amount. But Arcserve is reporting the tape as being full
when i try and run a backup. I am using SDX-50c tapes which means
compressed i should be able to store up to 130gb.

In the device manager of Arcserve its picking up the tape as being
compression turned on but only identifying the tape as a AIT1.

Any ideas ?