Configuration Rules - Sun Microsystems Enterprise 250 Owner's Manual

Solaris on Sun Hardware AnswerBook. This AnswerBook documentation is provided
on the SMCC Supplement CD for the Solaris release you are running.
In order to perform a disk hot-plug procedure, you must know the physical or
logical device name for the drive that you want to install or remove. If your system
encounters a disk error, often you can find messages about failing or failed disks in
your system console. This information is also logged in the /var/adm/messages
file(s). These error messages typically refer to a failed disk drive by its physical
device name (such as /devices/pci@1f,4000/scsi@3/sd@b,0) or by its logical
device name (such as c0t11d0). In addition, some applications may report a disk
slot number (0 through 5) or activate an LED located next to the disk drive itself.
You can use the following table to associate a disk slot number with the logical and
physical device names for each disk drive.
TABLE 5–2
Disk Slot Logical Device
Number Name
Slot 0 c0t0d0
Slot 1 c0t8d0
Slot 2 c0t9d0
Slot 3 c0t10d0
Slot 4 c0t11d0
Slot 5 c0t12d0
Configuration Rules
Disk drives must be Sun standard 3.5-inch wide UltraSCSI-compatible drives, either
1 inch or 1.6 inches high. UltraSCSI-compatible 1-inch and 1.6-inch high drives can
be mixed in the same system.
The SCSI IDs for the disks are hardwired on the disk backplanes. There is no need to
set any SCSI ID jumpers on the disk drives themselves. The SCSI target address
(SCSI ID) of each disk drive is determined by the slot location where the drive is
connected to its UltraSCSI backplane.
Physical Device Name
/devices/pci@1f,4000/scsi@3/sd@0,0
/devices/pci@1f,4000/scsi@3/sd@8,0
/devices/pci@1f,4000/scsi@3/sd@9,0
/devices/pci@1f,4000/scsi@3/sd@a,0
/devices/pci@1f,4000/scsi@3/sd@b,0
/devices/pci@1f,4000/scsi@3/sd@c,0
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Hardware Configuration