Take Apart Hard Drive, Ultra2 LVD SCSI - 68
You must assign a SCSI ID
number to every additional
hard drive and the number
must not conflict with the ID
number already assigned to a
drive on the SCSI chain. One
factory-installed drive has
ID 0; a second factory-
installed drive has ID 1; a
third drive has ID 2. The
SCSI PCI card has ID 7.