IOPIP27

I/O card cache data exists for a missing or failed device.

1. If the system has logical partitions, perform this procedure from the logical partition that reported the problem. To determine if the system has logical partitions, go to Determining if the system has logical partitions before continuing with this procedure.
2. Access SST/DST by doing one of the following:
   • If you can enter a command at the console, access system service tools (SST). See System service tools .
   • If you cannot enter a command at the console, perform an IPL to DST. See Performing an IPL to dedicated service tools .
   • If you cannot perform a type A or B IPL, perform a type D IPL from removable media.
3. Did you perform a D IPL to get to DST?
   • Yes: Continue with the next step.
   • No: Perform the following steps:
     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 I/O card address.
     3. Then view the "Additional Information" to record the formatted log information. Record the device types and serial numbers for those devices that show a unit address of 0000 0000.
     4. Continue with step 5.
4. Perform the following steps:
   1. Access the Product Activity Log and display the SRC that sent you here. The direct select address (DSA) of the I/O card is in the format BBBB-Cc-bb:
      • BBBB = hexadecimal offsets 4C and 4D.
      • Cc = hexadecimal offset 51
      • bb = hexadecimal offset 4F

      The unit address of the I/O card is hexadecimal offset 18C through 18F.

      A formatted display of hexadecimal information for Product Activity Log entries is not available. In order to interpret the hexadecimal information, see More information from hexadecimal reports .

   2. Record the device types and serial numbers for those devices that show a unit address of 0000 0000.
   3. Continue with the next step.
5. See System FRU locations and find the diagram of the system unit, or the expansion unit. Find the card slot that is identified by the I/O card direct select address (DSA) and unit address. If there is no IOA with a matching DSA and unit address, the IOP and IOA are one card. Use the IOP with the same DSA.
6. Choose from the following options:
   • If the devices from step 3 of this procedure have never been installed on this system, continue with the next step.
   • If the devices are not in the current system disk configuration, go to step 9.
   • Otherwise, the devices are part of the system disk configuration; go to step 11.
7. Choose from the following options:
   • If this I/O card and cache card were moved from a different system, continue with the next step.
   • Otherwise, the cache card was shipped to the customer without first being cleared. Perform the following:
     1. Make a note of the serial number, the customer number, and the device types and their serial numbers. These were found in step 3.
     2. Inform your next level of support.
     3. Then go to step 10 to clear the cache card and correct the URC 9051 problem.
8. Install both the I/O card and the cache cards back into their original locations. Then re-IPL the system. There could be data in the cache card for devices in the disk configuration of the original system. After an IPL to DST and a normal power off on the original system, the cache card will be cleared. It is then safe to move the I/O card and the cache card to another location.
9. One or more devices that are not currently part of the system disk configuration were installed on this I/O card. Either they were removed concurrently, they were removed after an abnormal power off, or they have failed. Continue with the next step.
10. Use the Reclaim IOP cache storage procedure to clear data from the cache for the missing or failed devices as follows:
    1. Perform an IPL to DST. See Performing an IPL to dedicated service tools .

       If you cannot perform a type A or B IPL, perform a type D IPL from removable media.

    2. Reclaim the cache adapter card storage. See Reclaiming IOP cache storage .
11. Choose from the following options:
    • If this I/O card and cache card were moved from a different location on this system, go to step 8.
    • If the devices from step 3 of this procedure are now installed on another I/O card, and they were moved there before the devices were added to the system disk configuration, go to step 7. (On an MES, the disk units are sometimes moved from one I/O card to another I/O card. This problem will result if manufacturing did not clear the cache card before shipping the MES.)
    • Otherwise, continue with the next step.
12. One or more devices that are currently part of the system disk configuration are either missing or failed, and have data in the cache card. Consider the following:
    • The problem may be because devices were moved from the I/O card concurrently, or they were removed after an abnormal power off. If this is the case, locate the devices, power off the system and install the devices on the correct I/O card.
    • If no devices were moved, look for other errors logged against the device, or against the I/O card that occurred at approximately the same time as this error. Continue the service action by using these system reference codes.