SPARC T7 Series Servers Administration Guide

Correlate WWN Device Names With Physical Locations (probe-scsi-all Command)

1. At the OpenBoot prompt, type:

   ok probe-scsi-all
   /pci@400/pci@1/pci@0/pci@LSI,sas@0
   FCode Version 1.00.54, MPT Version 2.00, Firmware Version 5.00.17.00
   
   Target 9
    Unit 0   Disk   SEAGATE   ST9300003SSUN3006 0B70   585937500 Blocks, 300 GB
    SASDeviceName 5000c50033438dbb  SASAddress 5000c50033438db9  PhyNum 0
   Target b
    Unit 0   Dusj   SEAGATE  ST930003SSUN300G 0468   585937500 Blocks, 300 GB
    SASDeviceName 5000c50005c15803  SASAddress 5000c50005c15801  PhyNum 1
   Target c
    Unit 0  Elcl Serv device   SUN      NEM Hydra II SOL 0308
    SASAddress 5080020000bb193d  PhyNum 24
   
   /pci@400/pci@1/pci@0/pci@0/pci@0/usb@0,2/hub@3/storage@2
    Unit 0  Removable Read Only device   AMI     Virtual CDROM   1.00
   

2. In the probe-scsi-all output, find the following disk identifiers:

   • LSI,sas@0 – Disk controller, followed by its associated target drives with their Target IDs. If the server has more than one disk controller, the target drives associated with each controller are listed following that controller's information.

   • SASDeviceName – WWN that Oracle Solaris recognizes.

   • SASAddress – WWN that OpenBoot references.

   • PhyNum – Physical slot that the drive occupies (the value 0 indicates a drive in HDD slot 0).

3. Use the values in the probe-scsi-all output to construct a logical device name in the cntWWNdn format that is recognized by Oracle Solaris.

   For the example output, you can construct an Oracle Solaris device name for the drive in slot 0, indicated with PhyNum 0, as follows:

   • cn = c0

     n is the SAS disk controller number.

   • tWWN = t5000c50033438dbb

     WWN is the SASDeviceName value.

   • dn = d0

     n is 0 for all embedded SCSI devices.

   The completed logical device name is c0t5000c50033438dbbd0.

Related Information

• probe-scsi-all Device Naming (OpenBoot)