Francois,
How are you mapping your LUNs for your ADTX on 10.3.9 ? I’ve tried with an Apple and an ATTO Celerity dual channel HBA and what I find is that if I map the LUNs to isolate them from the individual FC ports on the ADTX RAID controller, LUN 1 generally will not show up. If I don’t map anything, which means all the LUNs are unmapped, then LUN 0 and 1 (I only have two LUNs created) will show up on the desktop.
I get the same behaviour in Tiger as well.
Is this what you are seeing too ?
-chrispy