[arch-general] Unable to use tape drive

Good morning. I have been trying to my Dell LTO-120 SCSI Tape Drive on Arch without success. I have tried to run $ modprobe st, but still, I have no /dev/st0 and neither /dev/nst0. dmesg | grep -i tape shows nothing too. Is there anything I'm missing here? Dell's user manual says that the drive should work out of the box on linux. Best regards, Vitor