SIP3150

Use the following to perform SAS fabric problem isolation.

Considerations:

Attention: When SAS fabric problems exist, obtain assistance from your hardware service provider:
  1. Was the SRC xxxx3020?
    No
    Go to step 3.
    Yes
    Go to step 2.
  2. The possible causes are: This ends the procedure.
  3. Determine the status of the disk units in the array by doing the following:
    1. Access the Product Activity Log and display the SRC that sent you here.
    2. Press the F9 key for address information. This is the adapter address.
    3. Return to the SST or DST main menu.
    4. Select Work with disk units -> Display disk configuration -> Display disk configuration status.
    5. On the Display disk configuration status screen, look for the devices attached to the adapter that was identified.
    Is there a device that has a status of "RAID-5/Unknown", "RAID-6/Unknown", "RAID-5/Failed", or "RAID-6/Failed"?
    No
    Go to step 5.
    Yes
    Go to step 4
  4. Other errors should have occurred related to the disk array having degraded protection. Take action on these errors to replace the failed disk unit and restore the disk array to a fully protected state. This ends the procedure.
  5. Have other errors occurred at the same time as this error?
    No
    Go to step 7.
    Yes
    Go to step 6
  6. Take action on the other errors that have occurred at the same time as this error. This ends the procedure.
  7. Was the SRC xxxxFFFE?
    No
    Go to step 10.
    Yes
    Go to step 8.
  8. Check for the latest PTFs for the device, device enclosure, and adapter and apply them. Did you find and apply a PTF?
    No
    Go to step 10.
    Yes
    Go to step 9.
  9. This ends the procedure.
  10. Identify the adapter and adapter port associated with the problem by examining the Product Activity Log. Perform the following:
    1. Access SST/DST.
      • If you can enter a command at the console, access system service tools (SST). See System Service Tools (SST).
      • If you cannot enter a command at the console, perform an IPL to DST. See Performing an IPL to DST.
      • If you cannot perform a type A or B IPL, perform a type D IPL from removable media.
    2. Access the Product Activity Log and display the SRC that sent you here. Record the adapter address and the adapter port by doing one of the following:
      • If the SRC is xxxxFFFE, press the F9 key for "Address Information". The adapter address is the bus, board, card information. The port is shown in the "I/O bus" field. Convert the port value from decimal to hexadecimal.
      • Press the F9 key for "Address Information". The adapter address is the bus, board, card information. Then, press F12 to cancel and return to the previous screen. Then press the F4 key to view the "Additional Information", if available. The adapter port is characters 1 and 2 of the unit address. For example, if the unit address is 123456FF, the port would be 12.
      • Go to Hexadecimal Product Activity Log data to obtain the address information. The adapter address is the bus, board, card information. The adapter port is characters 1 and 2 of the unit address. For example, if the unit address is 123456FF, the port would be 12.
  11. Use the adapter address to find the location of the adapter (see Locating FRUs). On the tailstock of the adapter, find the port identified in the previous step. This is the port that is used to attach the device, or device enclosure, that is experiencing the problem.
  12. Because the problem persists, some corrective action is needed to resolve the problem. Proceed by doing the following:

    Perform only one of the following corrective actions (listed in the order of preference). If one of the corrective actions has previously been attempted, proceed to the next one in the list.

  13. Does the problem still occur after performing the corrective action?