Setup Compaq DLT on SuSE Sever on Compaq Array

Hi all, I need to use a Compaq DLT 40/80 Backup Drive on Suse 6.4 Server with Raid Smart Array. The Smart Array is in use wiht 3 physical Disk for 1 logicl volume. It's running perfect. The DLT Drive is plugged on external scsi port and is detected by the bios, but not by linux kernel. Any help is welcome. Yvon