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##### `probe-scsi-all` WWN Mapping Example (SPARC T4-1B and Netra SPARC T4-1B)

The SPARC and Netra SPARC T4-1B blades have two SCSI disk slots in the disk backplane. A Sun Blade 6000 RAID 0/1 SAS2 HBA REM, which is plugged into the motherboard, manages storage devices installed in these backplane slots.

The following table shows the PhyNum-to-disk slot mapping for the two-slot SPARC T4-1B backplane.

Table 14 SAS2 Controller Port Mapping for the SPARC T4-1B Disk Backplane

Controller Port (PhyNum) 0 | Controller Port (PhyNum) 1
Disk Slot ID 01 | Disk Slot ID 1

1Default boot drive

The following example is based on a SPARC T4-1B blade with both hard drives attached to the controller as individual storage devices.

    ok probe-scsi-all
    /pci@400/pci@1/pci@0/pci@c/LSI,sas@0       <===== SAS Controller

    FCode Version 1.00.54, MPT Version 2.00, Firmware Version 5.00.17.00

    Target 9
      Unit 0   Disk     SEAGATE ST930003SSUN300G 0868    585937500 Blocks, 300 GB
      SASDeviceName 5000c500231694cf SASAddress 5000c500231694cd PhyNum 0
    Target a
      Unit 0   Disk     SEAGATE ST973402SSUN72G 0603     143374738 Blocks, 73 GB
      SASDeviceName 5000c50003d37fcb  SASAddress 5000c50003d37fc9   PhyNum 1

    /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

    ok

In this example, the controller ports are attached to the hard drives in the following manner:

Controller Port (PhyNum) 0 | Controller Port (PhyNum) 1
Target 9 (Disk Slot ID 0) | Target a (Disk Slot ID 1)

Note - Target values are not static. The same storage device can appear in two consecutive `probe-scsi-all` listings with different Target values.

The default boot device has the following values:

- Controller = 0

- Target = 9

- PhyNum = `0`

- SASDeviceName = `5000c500231694cf`

- SASAddress = `5000c500231694cd`

If you want to specify the hard drive in disk slot 1 to be the boot device, it would have the following values in this example:

- Controller = `0`

- Target = `a`

- PhyNum = `1`

- SASDeviceName = `5000c50003d37fcb`

- SASAddress = `5000c50003d37fc9`

The following example is based on a SPARC T4-1B blade with both hard drives attached to the controller as a RAID volume.

    ok probe-scsi-all
    /pci@400/pci@1/pci@0/pci@2/LSI,sas@0       <===== SAS Controller

    FCode Version 1.00.54, MPT Version 2.00, Firmware Version 5.00.17.00

    Target 377 Volume 0
      Unit 0   Disk   LSI     Logical Volume   3000   583983104 Blocks,   298 GB
      VolumeDeviceName 3ce534e42c02a3c0   VolumeWWID 0ce534e42c02a3c0

    /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

    ok

In this example, the controller ports are attached to a RAID volume containing the hard drives installed in disk slots 0 and 1.

##### Related Information

- World Wide Name Syntax

- `probe-scsi-all` WWN Mapping Overview

- WWN Syntax in an OS Installation on an Individual Drive

- WWN Syntax in an OS Installation on a RAID Volume

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