SIP3131

Use this procedure to resolve the following problem: Required cache data cannot be located for one or more disk units (SRC xxxx9050).

  1. Did you just exchange the adapter as the result of a failure?
    No:
    Go to step 3.
    Yes:
    Attention:
    1. The failed adapter that you have just exchanged contains cache data that is required by the disk units that were attached to that adapter. If the adapter that you just exchanged is failing intermittently, reinstalling it and performing an IPL of the system might allow the data to be successfully written to the disk units. After the cache data is written to the disk units and the system is powered off normally, the adapter can be replaced without data being lost. Otherwise, continue with this procedure.
    2. Label all parts (old and new) before moving them.
    Go to step 2.
  2. Using the appropriate service procedures, remove the adapter. Install the new replacement storage adapter with the following parts installed on it: Go to step 8.
  3. Identify the affected adapter and disk units by examining the Product Activity Log. Perform the following:
    1. Access SST/DST.
    2. Access the product activity log and record address information.
      If a type D IPL was not performed to get to SST/DST:
      The log information is formatted. Access the Product Activity Log and display the SRC that sent you here. Press the F9 key for address information. This is the adapter address. Then, press F12 to cancel and return to the previous screen. Then press the F4 key to view the additional information to record the formatted log information. The Device Errors detected field indicates the total number of disk units that are affected. The Device Errors Logged field indicates the number of disk units for which detailed information is provided. Under the Device heading, the unit address, type, serial number, and worldwide ID are provided for up to three disk units. Additionally, the adapter type, serial number, and worldwide ID for each of these disk units indicates the adapter to which the disk was last attached when it was operational.
      If a type D IPL was performed to get to DST:
      The log information is not formatted. Access the product activity log and display the SRC that sent you here. The direct select address (DSA) of the adapter is in the format BBBB-Cc-bb:
      BBBB
      Hexadecimal offsets 4C and 4D
      Cc
      hHexadecimal offset 51
      bb
      Hexadecimal offset 4F

      In order to interpret the hexadecimal information to get device addresses, see More information from hexadecimal reports . The Device Errors Detected field indicates the total number of disk units that are affected. The Device Errors Logged field indicates the number of disk units for which detailed information is provided. Under the Device heading, the unit address, type, serial number, and worldwide ID are provided for up to three disk units. Additionally, the adapter type, serial number, and worldwide ID for each of these disk units indicates the adapter to which the disk was last attached when it was operational.

    3. Determine the location of the adapter and the devices that are causing the problem. See System FRU locations and find the diagram of the system unit or the expansion unit. Then find the following items:
      • The card slot that is identified by the direct select address (DSA)
      • The disk unit locations that are identified by the unit addresses
      Have you determined the location of the adapter and the devices that are causing the problem?
      • No: Ask your next level of support for assistance. This ends the procedure.
      • Yes: Continue with the next step.
  4. Have the adapter or disk units been physically moved recently?
    No:
    Contact your hardware service provider.
    Yes:
    Go to step 5.
  5. Is the data on the disk units needed for this or any other system?
    No:
    Go to step 7.
    Yes:
    Go to step 6
  6. Restore the adapter and disk units back to their original configuration. The adapter and disk units must be rejoined so that the cache data can be written to the disk units.

    After the cache data is written to the disk units and the system is powered off normally, the adapter or disk units can be moved to another location. This ends the procedure

  7. Perform only one of the following options, listed in the order of preference:
    Option 1
    Reclaim adapter cache storage. See Reclaiming IOP cache storage .
    Attention: Data on the disk array will be lost.
    This ends the procedure.
    Option 2
    If the data on the disk units is not needed, initialize and format the disk units by performing the following steps:
    Attention: Data on the disk units will be lost.
    If a type D IPL was not performed to get to SST or DST:
    1. Access SST or DST.
    2. Select Work with disk units > Work with disk unit recovery > Disk unit problem recovery procedures.
    3. Select Initialize and format disk unit for each disk unit. When the new disk unit is initialized and formatted, the display shows that the status is complete. This might take 30 minutes or much longer depending on the capacity of the disk unit. The disk unit is now ready to be added to the system configuration. This ends the procedure.
    If a type D IPL was performed to get to DST:
    1. Access DST.
    2. Select Work with disk units.
    3. Select Initialize and format disk unit for each disk unit. When the new disk unit is initialized and formatted, the display shows that the status is complete. This might take 30 minutes or much longer depending on the capacity of the disk unit. The disk unit is now ready to be added to the system configuration. This ends the procedure.
  8. Has a new SRC xxxx9010 or xxxx9050 occurred?
    No:
    Go to step 10.
    Yes:
    Go to step 9.
  9. Was the new SRC xxxx9050?
    No:
    The new SRC was xxxx9010.

    Reclaim adapter cache storage. See Reclaiming IOP cache storage ..

    Attention: Data might be lost. When an auxiliary cache adapter connected to the RAID adapter logs an xxxx9055 SRC in the hardware error log, the reclaim process does not result in lost sectors. Otherwise, the reclaim process does result in lost sectors.
    Note: On the Reclaim Controller Cache Storage results screen, the number of lost sectors is displayed. If the number is 0, there is no data loss. If the number is not 0, data has been lost and the system operator might want to restore data after this procedure is completed.
    Go to step 10
    Yes:
    Contact your hardware service provider.
  10. Using the appropriate service procedures, remove the adapter. Install the new replacement storage adapter with the following parts installed on it: This ends the procedure.