Friday, 13 April 2018

Exadata - Replace Failed Internal USB Drive on Exadata Storage Cell

While working on Exadata Storage cell patching, the patching failed due to failed internal USB drive on a storage cell.

Oracle uses internal USB drive to backup Exadata Storage cell automatically. We don't have to backup Storage cell manually.

In this article I will demonstrate how to replace a failed USB drive an Exadata Storage cell

  • You will receive an automated smtp alert (if configured) similar to below.



  • You can also use the following command to check for USB drive failure

[root@dm01cel01 ~]# cellcli -e list alerthistory
         1_1     2018-04-10T18:25:42-05:00       warning         "Internal USB status is not present.  Affected USB Slots : 0"

  • You can also use the following ILOM command to check for USB drive failure

[root@dm01cel01 ~]# ssh dm01cel01-ilom
Password: *******


Oracle(R) Integrated Lights Out Manager



Version 3.2.10.22.a r121524



Copyright (c) 2017, Oracle and/or its affiliates. All rights reserved.


Warning: HTTPS certificate is set to factory default.



Hostname: dm01cel01-ilom



-> show /SYS/MB/USB0


  • Open an SR with Oracle if an ASR is already generated
  • Upload sundgia.sh and ILOM Snapshot to the SR for investigation
  • Oracle confirms the that USB drive is faulted
  • Oracle opens a Field task
  • Oracle dispatch team contacts the SR owner with the hardware dispatch details
  • Confirm the Hardware replacement schedule over email and/or SR
  • Schedule the Hardware replacement
  • Oracle FE arrives at the data center with the new USB drive
  • Shutdown the storage cell by following the steps from the MOS below

Steps to shut down or reboot an Exadata storage cell without affecting ASM (Doc ID 1188080.1)
  • Oracle FE replaces the faulty USB drive and power up the storage cell
  • Confirm that the USB drive is good

-> show /SYS/MB/USB0


 /SYS/MB/USB0

    Targets:


    Properties:

        type = USB Port
        fault_state = OK
        clear_fault_action = (none)


    Commands:

        cd
        set
        show


->



[root@dm01cel01 ~]# cellcli -e list alerthistory

         1_2     2018-04-11T02:45:49-05:00       clear           "Internal USB status is back to normal.  Affected USB Slots : 0"

  • You will receive an automated smtp alert (if configured) similar to below that the USB status is back to normal




Conclusion

In this article we have learned how to replace a faulty USB drive in Exadata Storage cell. Oracle uses USB drive to backup Exadata Storage cell automatically. We don't have to backup Storage cell manually.

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