How do I config a Hewlett Packard Storageworks Ultrium 230 and control tape changer on Red Hat Enterprise Linux 2.1?

Manual configuration is required to have this hardward preform correctly under Red Hat Enterprise Linux 2.1.

Add the following to /etc/modules.conf:

post-install scsi_hostadapter modprobe st

The tape changer can be controled from software (see man mtx for more information) after issuing the following command:

echo "scsi add-single-device A B C D" > /proc/scsi/scsi

Where the following applies:

A = Hostadapter ID (first is 0)
B = SCSI Channel (First is 0)
C = SCSI ID of tape drive.
D = SCSI LUN of tape changer (use: 1)

Use /dev/sgX for the tape changer where X is determined by looking at the location of the changer device in the output of /proc/scsi/scsi. If the changer is the 3rd device listed, the correct device would be /dev/sg2. Remeber that the count starts from 0!