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Determining the ERM location from the RAID controller location when using Linux

Learn how to use the Linux operating system to determine the physical location of the RAID controller on the enclosure RAID module (ERM) when you have the RAID controller logical location code.

Use one of the following methods to determine the RAID controller physical location:

Finding the port of the GX adapter

Find the port on the GX adapter in the system unit that is identified by the RAID controller logical location code (the –Ty in the example Utttt.mmm.sssssss-Pw-Cx-Ty-L1(-T1)). Trace the cable from that port to the PCIe storage enclosure to identify the physical ERM. You can also use the Advanced System Management Interface (ASMI) to identify the light-emitting diode (LED) for the ERM.

Using the operating system tools

Use the operating system tools to find the serial-attached SCSI (SAS) enclosure service (SES) resource that has the same serial number as the RAID controller. After the matching SES is found, the hardware location code in the SES vital product data (VPD) is the ERM physical location code that corresponds to the RAID controller.

An example of finding the physical location for the RAID controller resource to be replaced follows:
  1. Type iprconfig on the command line of the Linux session and press Enter. The IBM® Power RAID Configuration Utility display is shown.
  2. Select Work with disk unit recovery from the IBM Power RAID Configuration Utility display, and press Enter.
  3. Select Work with disk enclosures from the Work with Disk Unit Recovery display, and press Enter.

    Information similar to the following is shown for display 1:

    Work with disk enclosures, display 1

  4. Type t to toggle to the next display.

    Information similar to the following is shown for display 2:

    Work with disk enclosures, display 2
  5. Use display 1 to find the serial number of the RAID controller.
  6. Use display 1 to find which SES serial number matches the serial number of the RAID controller. Each RAID controller has two SES entries.
  7. Use the matching SES in display 1 to find the physical location of the RAID controller in display 2.
Parent topic: Determining the ERM location from the RAID controller location

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Last updated: Thu, October 10, 2013