Skip Navigation Links
Exit Print View
| SPARC T4-1 Server HTML Document Collection

Search Scope:

- This Document
- Entire Library

##### `probe-scsi-all` WWN Mapping Example (SPARC T4-4 With Two CPUs)

The SPARC T4-4 server has two REM cards plugged into the motherboard. These modules are referred to as controllers 0 and 1. Each SAS controller is connected to a separate four-slot disk backplane. The following table shows the PhyNum-to-disk slot mapping for the two four-slot SPARC T4-4 backplanes.

Table 13 SAS2 Controller Port Mapping for the SPARC T4-4 Disk Backplane

Disk Backplane 0 |  | Disk Backplane 1
--- | --- | ---
SAS2 Controller | Controller Port ID (PhyNum) | Disk Slot ID |  | SAS2 Controller | Controller Port ID (PhyNum) | Disk Slot ID
0 | 0 | 01 |  | 1 | 0 | 4
| 1 | 1 |  |  | 1 | 5
| 2 | 2 |  |  | 2 | 6
| 3 | 3 |  |  | 3 | 7

1Default boot drive

This table shows that ports 0-3 of controller 0 are connected to backplane slots 0-3 and ports 0-3 of controller 1 are connected to slots 4-7.

The following example is based on a SPARC T4-4 server with two CPUs and eight hard drives. These hard drives are deployed as six individual storage devices and a virtual drive that consists of two hard drives configured as a RAID volume. Controllers 0 and 1 are attached to these storage devices in the following manner:

- Controller 0 is attached to Targets 9 and a (two individual storage devices).

- Controller 0 is also attached to Target 457 (a RAID volume).

- Controller 1 is attached to Targets 9, a, b, and c (four individual storage devices).

Note - OBP uses a different device path for SAS controller 1 in SPARC T4-4 servers, depending on whether the server has four processors or two processors.The path for SAS controller 0 is the same for both processor configurations.

    ok probe-scsi-all
    /pci@500/pci@1/pci@0/pci@0/LSI,sas@0                    <---- SAS controller 1

    FCode Version 1.00.54, MPT Version 2.00, Firmware Version 5.00.17.00

    Target 9
      Unit 0   Disk   HITACHI  H103030SCSUN300G A2A8    585937500 Blocks, 300 GB
      SASDeviceName 5000cca00abc5cc8  SASAddress 5000cca00abc5cc9  PhyNum 0
    Target a
      Unit 0   Disk   HITACHI  H103030SCSUN300G A2A8    585937500 Blocks, 300 GB
      SASDeviceName 5000cca00abaf620  SASAddress 5000cca00abaf621  PhyNum 1
    Target b
      Unit 0   Disk   HITACHI  H103030SCSUN300G A2A8    585937500 Blocks, 300 GB
      SASDeviceName 5000cca00abcec4c  SASAddress 5000cca00abcec4d  PhyNum 2
    Target c
      Unit 0   Disk   HITACHI  H103030SCSUN300G A2A8    585937500 Blocks, 300 GB
      SASDeviceName 5000cca00abc5218  SASAddress 5000cca00abc5219  PhyNum 3

    /pci@400/pci@1/pci@0/pci@8/pci@0/usb@0,2/hub@2/hub@3/storage@2
    Unit 0   Removable Read Only device    AMI     Virtual CDROM   1.00

    /pci@400/pci@1/pci@0/pci@0/LSI,sas@0                    <---- SAS controller 0

    FCode Version 1.00.54, MPT Version 2.00, Firmware Version 5.00.17.00

    Target 9
      Unit 0   Disk   HITACHI  H103030SCSUN300G A2A8    585937500 Blocks, 300 GB
      SASDeviceName 5000cca00abcede0  SASAddress 5000cca00abcede1  PhyNum 0
    Target a
      Unit 0   Disk   HITACHI  H103030SCSUN300G A2A8    585937500 Blocks, 300 GB
      SASDeviceName 5000cca00abc51a8  SASAddress 5000cca00abc51a9  PhyNum 1
    Target 457 Volume 0
      Unit 0   Disk   LSI     Logical Volume   3000   583983104 Blocks,   298 GB
      VolumeDeviceName 3ce534e42c02a3c0   VolumeWWID 0ce534e42c02a3c0

    ok

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

Disk Backplane 0 |  | Disk Backplane 1
--- | --- | ---
Controller Port (PhyNum) | Disk Slot ID | Target |  | Controller Port (PhyNum) | Disk Slot ID | Target
0 | 01 | 9 |  | 0 | 4 | 9
1 | 1 | a |  | 1 | 5 | a
2 | 2 | RAID Target 457 |  | 2 | 6 | b
3 | 3 | RAID Target 457 |  | 3 | 7 | c

1Default boot drive

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 = `5000cca00abcede0`

- SASAddress = `5000cca00abcede1`

If you want to specify another drive to be the boot device, find its `PhyNum` value in the output and use the `SASDeviceName` assigned to that device. For example, if you want to use the hard drive in disk slot 1, it has the following values:

- Controller = `0`

- Target = `a`

- PhyNum = `1`

- SASDeviceName = `5000cca00abc51a8`

- SASAddress = `5000cca00abc51a9`

##### 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

Copyright © 2011, 2013, Oracle and/or its affiliates. All rights reserved. Legal Notices |