IOPIP20

Use this procedure to isolate the problem when two or more devices are missing from a disk array.

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. Have any other I/O card or device SRCs (other than a 902F SRC) occurred at about the same time as this error?
   • Yes: Use the other I/O card or device SRCs to correct the problem. This ends the procedure.
   • No: Has the I/O card, or have the devices been repaired or reconfigured recently?
     • Yes: Continue with the next step.
     • No: Contact your next level of support for assistance. This ends the procedure.
4. 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 and view the "Additional Information" to record the formatted log information. Record all devices that are missing from the disk array. These are the array members that have both a present address of 0 and an expected address that is not 0.
        Note: There might be more than one Product Activity Log entry with the same Log ID. Access any additional entries by pressing the enter key from the "Display Detail Report for Resource" screen. View the "Additional Information" for each entry to record the formatted log information.

        For example: There might be an xxxx902F SRC entry in the Product Activity Log if there are more than 10 disk units in the array.

     2. Continue with step 6.
5. 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 . Record all devices that are missing from the disk array. These are the array members that have both a present address of 0 and an expected address that is not 0.
   Note: There might be an xxxx902F SRC entry in the Product Activity Log if there are more than 10 disk units in the array. In order to interpret the hexadecimal information for these additional disk units, see More information from hexadecimal reports .
6. There are three possible ways to correct the problem:
   1. Find the missing devices and install them in the correct physical locations in the system. If you can find the missing devices and want to continue with this repair option, then continue with the next step.
   2. Stop the disk array that contains the missing devices.
      Attention: Customer data might be lost.

      If you want to continue with this repair option, go to step 8.

   3. Initialize and format the remaining members of the disk array.
      Attention: Customer data will be lost.

      If you want to continue with this repair option, go to step 9.

7. Perform the following:
   1. Install the missing devices in the correct locations in the system. See System FRU locations .
   2. Power on the system. See Powering on and powering off the system .

   Does the IPL complete successfully?

   • No: You have a new problem. Perform problem analysis and correct the problem. This ends the procedure.
   • Yes: This ends the procedure.
8. You have chosen to stop the disk array that contains the missing devices.
   Attention: Customer data might be lost.

   Perform the following:

   1. If you are not already using dedicated service tools, 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. Select Work with disk units.

      Did you get to DST with a Type D IPL?

      • Yes: Continue with the next step.
      • No: Select Work with disk configuration > Work with device parity protection. Then, continue with the next step.
   3. Select Stop device parity protection.
   4. Follow the on-line instructions to stop device parity protection.
   5. Perform an IPL from disk.

   Does the IPL complete successfully?

   • No: You have a new problem. Perform problem analysis and correct the problem.This ends the procedure.
   • Yes: This ends the procedure.
9. You have chosen to initialize and format the remaining members of the disk array. Perform the following steps:
   Attention: Customer data will be lost.
   1. If you are not already using dedicated service tools, 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. Select Work with disk units.

      Did you get to DST with a Type D IPL?

      • Yes: Continue with the next step.
      • No: Select Work with disk unit recovery > Disk unit problem recovery procedures, and continue with the next step.
10. Select Initialize and format disk unit.
11. Follow the online instructions to format and initialize the disk units.
12. Perform an IPL from disk. Does the IPL complete successfully?
    • No: You have a new problem. Perform problem analysis and correct the problem. This ends the procedure.
    • Yes: This ends the procedure.