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Initializing the disk unit and copying to disk

Use this procedure to initialize the disk unit and copy it to disk.

  1. Perform an IPL to Dedicated Service Tools (DST) (see Performing an IPL to DST). Does the Use Dedicated Service Tools (DST) display appear?
    • Yes: Continue with the next step.
    • No: Repeat this step and then choose one of the following:
      • If the same system reference code (SRC) occurs again, the customer data is not recoverable. Go to step 12.
      • If a different SRC occurs, go to the Start of call procedure to fix the problem. This ends the procedure.
  2. Is this a single disk unit system?
  3. Is the failing disk unit the load-source disk unit (disk unit 1 contains the load-source disk unit)?
    • Yes: Continue with the next step.
    • No: Go to step 17.
  4. Find another disk unit on the system and perform the following to install the new disk unit:
    1. Power off the system.
    2. Slide the disk unit you found out of the system (see Disk drive). Be very careful with the disk unit. You will install it again when the service actions to the failing load-source disk unit are complete.
    3. Install the new disk unit.
  5. Perform an IPL to DST (see Performing an IPL to DST). Does the Use Dedicated Service Tools (DST) display appear?
    • Yes: Continue with the next step.
    • No: Repeat step 1.
  6. Perform the following to format and initialize the disk drive that you installed in step 4:
    1. From the Use Dedicated Service Tools (DST) display, select Work with disk units > Work with disk unit recovery > Disk unit problem recovery procedures > Initialize and format disk unit.
    2. Select the unconfigured unit that you installed in step 4 as the unit to work with.
    3. Press F10 to verify the initialization and formatting. The initialization and formatting may take 30 minutes or longer to complete.
  7. Perform the following to copy data from the load-source disk unit to the disk drive you installed in step 4:
    1. Return to the Work with Disk Unit Recovery display.
    2. Select Copy disk unit data.
    3. Select the load-source disk unit (disk unit 1) as the unit to copy.
    4. Select the unconfigured unit that you installed in step 4 as the unit to copy to.
    5. The console displays the percentage of the data copied. Write down the number of unreadable pages if it displays; you will use it later in this procedure.
    6. Wait until the status of the copy is Complete. Customer data is not recoverable if one of the following occurs:
      • The copy operation does not complete.
      • There is a large number of unreadable pages to copy from the disk unit.
  8. Perform the following to remove the failing load-source disk unit from the system:
    1. Power off the system.
    2. Find the load-source disk unit. Slide the disk unit out of the system (see Disk drive).
  9. Perform the following to move the new disk unit into the load-source disk unit location:
    1. Slide the disk unit at the location you found in step 4 out of the system (see Disk drive). Be very careful with the disk unit—it contains the load-source data.
    2. Install the new disk unit into the location that used to contain the load-source disk unit.
  10. Install the disk unit that you removed in step 4.
  11. Were any pages unreadable during the copy operation (see step 7)?
  12. Perform the following to remove the failing load-source disk unit on the system:
    1. Power off the system.
    2. Find the load-source disk unit. Slide the disk unit out of the system (see Disk drive).
    3. Install the new disk unit.
  13. Perform an IPL from removable media and select the option to install Licensed Internal Code and recover the configuration (see Utilities to Install and Restore Licensed Internal Code).
  14. Did you get a Disk Configuration Error Report with a Unit has incorrect logical partition configuration warning?
    • No: Continue with the next step.
    • Yes: You have logical partitions that need to be recovered. Go to Restoring profile data and then continue with the next step.
  15. The system ASP will be cleared because customer data was not recoverable. Recover the configuration to disk unit 1 in the system unit by performing the following:
    1. Select Use Dedicated Service Tools (DST) from the IPL or Install the System display.
    2. Enter the password 22222222. If this password is not valid, ask the customer for the correct password.
    3. From the Use Dedicated Service Tools (DST) display, select Work with disk units > Work with disk unit recovery.
    4. Select Recover configuration option on the Work With Disk Unit Recovery display. This option assembles the system configuration information on disk unit 1 in the system unit.
      Notes:
      1. A warning message will appear stating that recovering the configuration destroys all system data.
      2. The recover configuration function cannot be performed on a system with only one disk unit. A message may appear stating that your request to recover the configuration was not successful.
    5. Continue with the next step.
  16. The ASP to which the failing disk unit was assigned is cleared. The customer should do the following:
    • If the disk unit you exchanged is in ASP 1, have the customer see the Backup and Recovery Link to PDF book. You must restore the operating system and all customer data.
    • If the disk unit is in a user ASP (ASP 2 through ASP 16), data in the ASP is lost. See the Backup and Recovery Link to PDF book. This ends the procedure.
  17. Is the failing unit missing from the configuration?
    • No: Find another disk unit on the system, other than the load-source disk unit. Continue with the next step.
    • Yes: Go to step 26.
  18. Perform the following to install a new disk unit on the system:
    1. Power off the system. Slide the disk unit that you found in the previous step of this procedure out of the system (see Disk drive). Be very careful with the disk unit—you will install it again when the repair actions to the failing disk unit are complete.
    2. Install the new disk unit.
  19. Perform an IPL to DST (see Performing an IPL to DST). Does the Use Dedicated Service Tools (DST) display appear?
    • Yes: Continue with the next step.
    • No: Repeat step 1.
  20. Perform the following to format and initialize the disk drive you installed in step 18:
    1. From the Use Dedicated Service Tools (DST) display, select Work with disk units > Work with disk unit recovery > Disk unit problem recovery procedures > Initialize and format disk unit.
    2. Select the unconfigured disk unit that you installed in step 18 as the unit to work with.
    3. Press F10 to verify the initialization and formatting. The initialization and formatting may take 30 minutes or longer to complete.
    4. Return to the Work with Disk Unit Recovery display.
  21. Perform the following to copy data from the failing disk drive to the disk drive you installed in step 18:
    1. Select Copy disk unit data on the Work with Disk Unit Recovery display.
    2. Select the failing unit as the unit to copy.
    3. Select the unconfigured unit that you installed in step 18 as the unit to copy to.
    4. The console displays the percentage of the data copied. Write down the number of unreadable pages if it displays; you will use it later in this procedure.
    5. Wait until the status of the copy is Complete. Continue with the next step.
      Note: Customer data is not recoverable if one of the following occurs:
      • The copy operation does not complete.
      • A large number of unreadable pages must be copied from the disk unit.
  22. Perform the following to remove the failing disk unit from the system:
    1. Power off the system.
    2. Find the failing disk unit. Slide the disk unit out of the system.
  23. Perform the following to move the new disk unit into the location that held the failing disk unit:
    1. Remove the new disk unit from the location you found in step 17. Be very careful with the disk unit—it contains sensitive data.
    2. Install the new disk unit into the location that contained the failing disk unit, which you removed in step 22.
  24. Install the disk unit you removed in step 18.
  25. Were any pages unreadable during the copy operation performed in step 21?
    • No: The system is ready for the next IPL. This ends the procedure.
    • Yes: Some objects may be damaged. The customer may have to load the damaged objects again. Refer the customer to the Backup and Recovery Link to PDF book. This ends the procedure.
  26. Are there multiple failing disk units under the same IOA?
  27. Because the disk data was not recoverable, clear the auxiliary storage pool (ASP) to which the disk unit is assigned by doing the following:
    1. Return to the Work with Disk Units display and select Work with disk configuration > Work with ASP configuration > Delete ASP data.
    2. Enter Delete for the ASP that you recorded in step 3, and confirm the deletion.
    3. Return to the Work with Disk Units display and select Work with disk unit recovery > Replace configured unit.
    4. On the Select Configured Unit to Replace display, select the configured disk unit to exchange.
    5. On the Select Replacement Unit display, select the replacement disk unit.
    6. Press Enter to confirm the replace operation (this operation takes 10 to 15 minutes to complete). The auxiliary storage pool to which the disk unit is assigned was erased. The customer must restore the data to the auxiliary storage pool. Refer the customer to the Backup and Recovery Link to PDF book.
  28. The ASP to which the failing disk unit was assigned is cleared. The customer should do the following:
    • If the disk unit you exchanged is in ASP 1, refer the customer to the Backup and Recovery Link to PDF book. You must restore the operating system and all customer data. This ends the procedure.
    • If the disk unit is in a user ASP (ASP 2 through ASP 16), data in the ASP is lost. See the Backup and Recovery Link to PDF book. This ends the procedure.
Parent topic: Disk unit recovery procedures
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Last updated: Fri, Oct 30, 2009