SUMMARY: Question on Enterprise T5220 controller numbering (Where is 'c0'?)

Controller 0 hosts the DVD drive, and it's USB!

t5220% ls -l /dev/sr0
lrwxrwxrwx   1 root     root          12 Jan 16 00:53 /dev/sr0 -> 
dsk/c0t0d0s2
t5220% ls -l /dev/dsk/c0t0d0s0
lrwxrwxrwx   1 root     root          78 Jan 16 00:51 /dev/dsk/c0t0d0s0 
-> 
../../devices/pci@0/pci@0/pci@1/pci@0/pci@1/pci@0/usb@0,2/storage@2/disk@0,0:a


Matthew Stier wrote:
> Anyone have an idea as to why the Solaris is starting disk controller 
> number from 1, and not 0?
>
> I got my first Enterprise T5220 this week, and I've just reloaded it 
> with Solaris_10_0807, to re-partition it to my needs.  However, for some 
> reason decides to start controller instances from 1, rather than 0.
>
> I did install a Qlogic HBA before rack-mounting the system, but Solaris 
> is identifying  that HBA as 'c2'.  Where is 'c0'?
>
> Note: I bought the T5220 with two 146GB drives, which are in slots 0 and 
> 1 on the front panel.
>
> t5220% more /etc/release
>                        Solaris 10 8/07 s10s_u4wos_12b SPARC
>            Copyright 2007 Sun Microsystems, Inc.  All Rights Reserved.
>                         Use is subject to license terms.
>                             Assembled 16 August 2007
>
> t5220% ls -l /dev/cfg
> total 10
> lrwxrwxrwx   1 root     root          43 Jan 16 00:51 c1 -> 
> ../../devices/pci@0/pci@0/pci@2/scsi@0:scsi
> lrwxrwxrwx   1 root     root          64 Jan 16 00:51 c2 -> 
> ../../devices/pci@0/pci@0/pci@8/pci@0/pci@9/QLGC,qlc@0/fp@0,0:fc
> drwxr-xr-x   2 root     root         512 Jan 16 00:51 usb0
> drwxr-xr-x   2 root     root         512 Jan 16 00:51 usb1
> drwxr-xr-x   2 root     root         512 Jan 16 00:51 usb2
>
> t5220% grep sd /etc/path_to_inst
> "/pci@0/pci@0/pci@1/pci@0/pci@1/pci@0/usb@0,2/storage@2/disk@0,0" 2 "sd"
> "/pci@0/pci@0/pci@2/scsi@0/sd@0,0" 1 "sd"
> "/pci@0/pci@0/pci@2/scsi@0/sd@1,0" 3 "sd"
>
> t5220% grep QLG /etc/path_to_inst
> "/pci@0/pci@0/pci@8/pci@0/pci@9/QLGC,qlc@0" 0 "qlc"
> "/pci@0/pci@0/pci@8/pci@0/pci@9/QLGC,qlc@0/fp@0,0" 1 "fp"
>
> [demime 1.01b removed an attachment of type text/x-vcard which had a name of Matthew_Stier.vcf]
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