SPARC T8 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

   The following example output is for a SPARC T8-2 server:

   ok probe-scsi-all
   /pci@308/pci@1/usb@0/hub@1/storage@3
     Unit 0   Disk     smiMICRON  eUSB DISK       1112
   
   /pci@308/pci@1/usb@0/hub@1/storage@1
     Unit 0   Removable Read Only device    SUNRemote ISO CDROM1.01
   
   /pci@303/pci@1/scsi@0
   
   FCode Version 1.00.64, MPT Version 2.05, Firmware Version 14.00.01.00
   
   
   /pci@301/pci@1/scsi@0
   
   FCode Version 1.00.64, MPT Version 2.05, Firmware Version 14.00.01.00
   
   Target 9
     Unit 0   Disk   HGST     H101812SFSUN1.2T A990    2344225968 Blocks, 1200 GB
     SASDeviceName 5000cca02d1036b4  SASAddress 5000cca02d1036b5  PhyNum 0
   Target a
     Unit 0   Disk   HGST     H101812SFSUN1.2T A990    2344225968 Blocks, 1200 GB
     SASDeviceName 5000cca02d1021b8  SASAddress 5000cca02d1021b9  PhyNum 1 

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

   • /pci@301/pci@1/scsi@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 = t5000cca02d1036b4

     WWN is the SASDeviceName value.

   • dn = d0

     n is 0 for all embedded SCSI devices.

   The completed logical device name is c0t5000cca02d1036b4d0.

Related Information

• probe-scsi-all Device Naming (OpenBoot)