HP-UX

# ioscan -f | grep disk
Class I H/W Path Driver S/W State H/W Type Description
disk 3 0/0/2/0.0.0.0 sdisk CLAIMED DEVICE TEAC DV-28E-N
disk 1 0/1/1/0.0.0 sdisk CLAIMED DEVICE HP 146 GST3146707LC c2t0d0
disk 0 0/1/1/0.1.0 sdisk CLAIMED DEVICE HP 146 GST3146707LC c2t1d0
disk 2 0/1/1/1.2.0 sdisk CLAIMED DEVICE HP 146 GST3146707LC c3t2d0
From the document, it says that :
In the hareware path, like 0/1/1/0.1.0, the second zero from left represents the address of SCSI adapte.
In the device name, like c2t0d0, the digit number after 'c' represents the adapter that the disk connects to.
Why are they different for a disk?
Another question is that, there are three disk in my hpux machine, in the directory, there are four files
# ls /dev/dsk
c0t0d0 c2t0d0 c2t1d0 c3t2d0
what does the c0t0d0 represent for ?
Thanks,^_^!

Looks like that is your cdrom drive - disk 3 0/0/2/0.0.0.0 sdisk CLAIMED DEVICE TEAC DV-28E-N